Do you have a pressing AeroPress question?
Here is your chance to get your question answered by AeroPress inventor Alan Adler! Simply use the form below to submit your question. If your question is chosen, it will be shown right here with your first name plus initial along with Alan's answer. Please understand we do not expect to be able to show all questions submitted and also that Alan will not disclose our product development plans or recommend products of other companies. If you are having a problem with your AeroPress coffee maker, please contact our Customer Service team.
Here are the questions that Alan has answered!
Any plans to offer permanent filters? – From Douglas F.
We have no plans to offer a permanent filter for our AeroPress. We did blind taste tests comparing paper filtered to metal filtered coffee and the paper filtered coffee always won. Paper filters also remove two chemicals which increase harmful LDL cholesterol. Metal filters do not. You can google 'coffee and cholesterol' to learn about this. Thus it is better for your health to use paper filters.Share
Hello, I'm a barista and a aeropress fan, an old one. I have some ideas for some little change in device for getting better, and my question is, can I share them to aeropress somehow? – From Sina N.
I have been using my AeroPress for years and love it. Recently with no change in grind or technique the water has started flowing through quickly before I plunge so that the final result is weak. I have ordered a new plunger but don't think that will make a difference in the water leaking through. Could something else be wearing out? – From Peg K.
Your AeroPress has probably not changed. More than likely your grind has changed even if you (or the store) are using the same grinder. Try setting your grinder on a finer setting or, if that does not help, have your grinder serviced. Grinders get dull with use.Share
Hi Alan. We have been using Aeropress for years. There is nothing better! Our coffee roaster suggested your coffee maker. Sometime after we had been using the Aeropress , the plunger wore out and when I called, it was suggested that I not store the plunger inside the cylinder. I changed and all is well for these last few years. Now, I am thinking of an Aeropress organizer. However, it appears that the two cylinders are stored intact. So, I read all of you many answers and found out I just need to push the rubber end through the opening! Do you think an organizer will do the job? Do you have a favorite? I have a couple of quirky comments. When I make my wife's one and only cup of the day, she likes 3 scoops. Sometimes that amount pushes slowly and you are correct to be patient. Sometimes, I slowly rotate back and forth as I push. I also put a dash of water on the filter after placement and before I put the cylinder in. It seems to ensure that the filter adheres completely. Thanks again for your great product. – From Ray S.
Hi Ray, Thanks for your message. If you grind at home, set the grinder coarser for 3 scoops. AlanShare
When do you know it is time to replace your Aeropress? I've had mine for about five years. It does have visible scratches, but still seals properly. – From Rachel S.
An AeroPress is going to get scratches. Ground coffee contains some hard bits. I recommend continuing to use your AeroPress until it stops working properly. The rubber seal is the component that gets the most wear but when it gets loose you should just visit our website, www.aeropress.com, and buy a new rubber seal. It is easy to replace on the end of the plunger.Share
I have a "pressing question" as a curious physics teacher: You have said pushing harder forces the coffee grains more into the filter which slows the flow of coffee into the cup. I have a hard time with this explanation. Pressing harder does not push downward on the grains. It increases the ambient pressure in the liquid which would be felt by all sides of each grain. A grain floating in the liquid would not be forced to the bottom by this process. It will go to the bottom due to gravity, but not increased ambient pressure. I can concede that there may be other reasons to prefer one pressure over another, but this explanation does not work for me. Have you, for instance, done objective testing of pressing time under different pressures? If there is a turn-around point in flow rate as a function of pressure, that would be interesting to know, but the explanation would have to be a bit more subtle. (None of this affects my appreciation for your invention, by the way. I love Aeropress coffee.) I am genuinely interested to know why coffee brewed at higher ambient pressure tastes richer. That would apply to high steam pressure in an espresso maker as well. I tentatively think of the Aeropress as an espresso maker simulator…pressure by different means. – From David C.
Hi David, I love physics. There are dynamic effects. The drag on each particle of grind is proportional to the flow velocity squared. So the dynamic drag on particles pushes them downward, compressing grind below. Then phenomenon below begin. I think that we can visualize any strata of grind as being sufficiently dense to behave approximately like a porous semi-solid. Pressing hard causes that strata become more densely packed and to also compress the grind below it. As we press, the more we compress the slurry, the greater this effect. There is no doubt that the pressing hard blocks flow and pressing gently gets the job done.Share
Do both the original and the Go have the same "bottom" side that sits on a cup, i.e. can they accommodate the same cup "top opening" diameters? Or is the Go smaller and only able to use the provided cup? Or does the original have a broader range of cup sizes that can be used with it? – From Amy S.
The original AeroPress and the Go have the same cylinder and cap diameter but the flange that supports the AeroPress on your cup is smaller on the Go. The Go can sit on a cup with a maximum inside diameter of about 3.25” whereas the original AeroPress can sit on a cup with a maximum inside diameter up to about 3.75”.Share
Three questions: 1. How can I purchase the sieve that holds the filter paper that fits on the main tube? 2. I am currently using a Fellow filter and find that the pressure is such that it is difficult if not impossible to plunge the plunger all the way down. 3. What is the correct setting on an Encore Baratza burr mill for grinding coffee to use with Aeropress? – From Philippe de L.
1. You can buy any AeroPress replacement part on our website, www.aeropress.com. 2. Your difficulty pressing is probably due to too fine a grind. Experiment with a coarser grind until your gentle pressing takes 30 to 40 seconds. 3. These experiments will probably lead to a grinder setting between espresso and drip. Also, consider the number of scoops you press and use a coarser grind when pressing more scoops.Share
Hi Alan i recently purchased the Aeropress Go!After placing the coffee inside then stirring before pludging should i let my coffee sit for 4 min. or any certain time or can i immediately plundge?Thanks so much! – From Michael B.
I recommend stirring for about 10 seconds and then pressing without delay. The short wet time helps to make AeroPress coffee less bitter than other brewing methods.Share
This is a suggestion rather than a question. One issue I have with the Aeropress is that the plunger does not stay perfectly concentric with the cylinder. When it tips it has a tendency to lose the air seal and even allow liquid to leak past the seal. This could be solved by adding 4 veins, or ribs that have a close fit to the cylinder, running lengthwise along the outside of the plunger and keep it in perfect alignment. I know making a new die is an expensive proposition, but at whatever time you make a new model you might consider adding this feature. Have you already considered this option and rejected it for reasons I can't forsee? – From David C.
Initially the AeroPress had exactly the ribs that you describe but we found that the ribs caused minor scratching on the inside of the chamber which affected appearance and they really were not needed. If your seal becomes loose in the chamber, order a replacement seal from this website.Share
Hi Alan, Love the aeropress and have been using for close to 5 years. Any tips on how to make a more acidic cup? Currently, I do 14 grams of coarse ground, with a very quick steep..say 45seconds-1minute (with the plunger on to keep the pressure) and then press as quick as possible. Thanks for the help! – From Collin W.
If you had asked how to make a richer cup, I would have recommended you use a finer grind. If you really do want a more acidic coffee (an unusual request), increase your steep time and/or your water temperature. Also, simply try more grind. You might like the resulting richer flavor.Share
Hi Alan! Does Arrow Press have a reusable filter I could purchase? – From Patrick T.
AeroPress only sells paper filters because our taste surveys indicate coffee filtered through a paper filter tastes better. We also have learned by reading medical research reports that drinking coffee that is not filtered through a paper filter raises your bad cholesterol and we want to do the right thing for the health of our customers.Share
Hi Alan. Been a huge fan of the aeropress. its my forth now. Got a question about the plunger seal. Half of my aeropress are pre 2018 (before silicone was used) and the other 2 are silicone based (I think as 1 is an aeropress go and the other has red lettering). Apart from being stickiness the thermoplaster elastomer can develop over time if the press is sitting idol, what drove you to change to silicone? was that only because of the stickiness or was there a difference in flavor of the brew. Thanks – From Daniel L.
We changed from making the seal out of thermoplastic rubber to making it out of silicone because silicone is more durable. We did not detect any flavor difference.Share
1. I want to the metal replacement filter for my aero press. I have the paper filters but this just goes to the landfill. Crazy not to be able to buy the metal filters. 2. A coworker had a stainless steel aero press. I cannot see that choice here. Thanks. – From Lynn P.
We only sell paper filters because coffee brewed using a paper filter tastes better than coffee brewed using a non paper (usually metal) filter plus a paper filter removes and a metal filter does not remove chemicals in coffee that raise your bad cholesterol. I would like to add that paper filters are both reusable many times and compostable right along with used coffee grounds. The manufacture of stainless steel filters is an energy consuming process that contributes to the pollution of our environment. Finally, 6,000 filters equal the same weight of paper as one daily newspaper.Share
Can you tell me what is the difference between model 80 R 11, 80 R 08B AND 83 R 01? – From Bernard St-L.
Those are not model numbers; they are stock numbers that vary by how the product is packed. All stock numbers that begin with “8” denote cases of our original AeroPress coffee and espresso maker so all of the stock numbers in your question denote cases of our original AeroPress.Share
I love my aero press. But I currently have some k cups. Can I dump the kcups into the aero press and use it to make a cup of coffee as I do normally with good grounds? – From Beth B.
The various cups on the market contain ground coffee so yes you can use their coffee in your AeroPress. The coffee may be a bit stale and also not finely ground enough so you will need to experiment with the amount of coffee and the steep time to make a cup you enjoy.Share
Your paper filters are very sturdy, I lose track of the times I wash and reuse them! I can’t help but wonder, do they contain silicone, or micro plastics to make them so durable? – From Paula D.
Our AeroPress paper filters feel sturdy because they are small. They do not contain any other material. They are made of the exact same filter paper that is used to make the cone filters you can buy in your local grocery store.Share
How to use your product or any after market products with Aeropress to be able to serve more people? – From Donald L.
Follow our instructions to brew some 3-scoop pressings of espresso style coffee prior to the guest's arrival. Then add hot water to serve American style coffee or add milk for lattes. This enables serving multiple guests rapidly.Share
I've been using aero press for years and recently bought a burr grinder to hopefully improve my espresso. Please tell me which grind you suggest–there's a range from coarse to very fine. – From Betty M.
The right grinder setting depends on your grinder and also on the number of scoops of coffee you are brewing per pressing. Experiment. When pressing gently, aim for a press time of from 40 to 60 seconds.Share
Mr. Alan, I just discovered the aeropress a week ago after going through the Chemex, v360, and French press. I am amazed by the flavor of the aeropress, but can you invent a giant big Aeropress please? If you can, please let me know and I will buy 2 or 3 of them as soon as possible. – From Tomas L.
I am glad to hear you are enjoying your AeroPress. And thanks for your enthusiasm for a giant AeroPress. We shall see.Share
It's my understanding that 1 scoop makes 8oz and 3 scoop makes 16oz, so cost wise it's better to make 2 single scoops. But how much does a 2 scoop make? I'm new, but loving it so far. Just trying to figure out a good morning routine with it. My favorite mug is 24oz, but that's not a deal breaker if I can get 20oz of coffee. – From Verna B.
The strength of coffee you enjoy most is personal so you should conduct some trials to determine your favorite way to brew using your AeroPress. The instructions that we provide with the AeroPress suggest using one rounded scoop (about 14 grams) of coffee for each shot of espresso style coffee desired and for each 8 oz serving of Americano style coffee. Try three rounded scoops and fill your 24 oz mug with Americano style coffee. That is a lot of coffee so you may need to use a slightly coarser grind and a little longer steep time. Experiment.Share
The pattern of the holes of the filter cap seems wisely designed in function and esthetic manner. It is clear for me why there are (the round ones) holes on the top, flat side of the cap. The coffee needs some way out… 😃 But for what reason are also quadratic holes on the round, outer side of the cab inside the rabbets? Have these any special function? Or are they only for a nicer design and looks better? Well my suggestion at first was, it could be a kind of “Filter Bypass”. The filter paper itself will cover all round holes of the top flat side of the cap so no coffee can come out without filtration. But if the filter is in place, it is too thin to also cover the whole hole of the outer quadratic holes on the side of the cap. There is almost 1mm left so theoretically coffee and grinds could pass through it. Technically this gap is limited because the ring of the main tube will almost cover these gap completely if you screw up the cap on it. But I figured out, the gap will only nearly disappear if I give extreme force on the cap at screwing it up so I am at 100% close. On the normally day by day usage (ok I am lazy maybe) I only screw it up “hand tight”. Securely tighten it up, but not the whole way the thread can offer me. Maybe 80-90%. That’s makes me the usage easier and the reverse way to un screw is also easier. In this scenario I can still see a minimal gap in the backlit between Filter paper and the top of the tube ring. So because these cap is maybe 10-20 micron it is really really small, my “Bypass” theory maybe makes no more sense… But this observation was interesting enough to me for writing you to get a real definitive answer to it. Thanks to you! Many greetings from Weiterstadt in Germany. – From Dennis K.
The filter cap holds the filter tightly against the bottom circle edge of the chamber, insuring that all coffee is forced through the filter. The side holes of the filter cap are there because the pressing pressure will force a small amount of coffee to exit sideways above the paper filter. The side holes give this sideways forced coffee an escape where it will still drip down into your cup. Without the side holes a tiny amount of coffee might creep upward and along the bottom of the flange and drip outside of your mug.Share
I want my coffee to brew longer than the 10 second allotted for in the instructions. If I leave my coffee in the press without plunging it will still trickle through. Can you devise something that will allow me to brew the coffee longer before plunging? Thank you. – From Warren V.
If you wish to halt the trickle for awhile, just insert the rubber seal a half-inch into the top of the chamber and the trickle will stop. This is similar to what we do when we clamp our thumb on the top of a straw to stop dripping out the bottom of the straw. Extending the brew time will result in more bite in your brew.Share
When making a 3-scoop batch, do I have to press the entire brew and then separate, or could I push the plunger one level into one cup, then move it to another cup and push it another third of the way, etc? – From Alanna C.
Hello Alanna, I tested your suggested method in my lab today. There were substantial variations in strength for each cup and even greater variations in the amount of brew in each cup. It's hard to equally divide at this stage.
The way I've always done it is to press it all into one cup. Then add some water so the cup is about 2/3 full, stir, and dispense equal amounts into the three serving cups. The added water makes it easier to share 3 equal servings. NASA scientist Craig McReight taught me that trick. Finally, top off all three cups with more water to achieve American coffee strength.Share
I saw some videos that some people tamped the coffee and used 2 filters below and above the grounds and used 1:2 espresso ratio. What is your opinion about this method? – From Omar E.
AeroPressers are inventors. I've tried that method but the result tasted similar to the simpler method of our instructions. Try it yourself and see what you think.Share
Hello. I’m enjoying my AeroPress coffee maker. I’ve been nuking 1.5 cups of water to 185 degrees, then pouring to the 1 cup mark. Then adding the rest of the water to the cup after plunging. Question: Could I use room temp water for the whole process, then nuke the finished product and get the same tasty results? If so, it saves a bit of time. I also add 1/4 cup of nuked half and half at the end. The finer the grind the better. Thank you! – From Pamela G.
Yes, we now recommend that people try brewing with room temp water. The brew is delicious and very smooth. Increase your stirring time to one or two minutes when using room temperature water to get full flavor. This may defeat your objective of saving time.Share
I just bought an Aeropress and have used it several times; still experimenting with what works best. I've used two spoonfuls from the plastic spoon that came with a 4-cup drip coffeemaker I used previously. I use a fine to medium grind, and notice that after pouring in the hot water in the cylinder, I can leave it alone and do my other breakfast preparation (about 3-4 minutes), and when I come back to the Aeropress, the water has completely drained into the coffee mug below, so I don't need to use the plunger. However, I notice the coffee is weaker. I think the water is seeping through too quickly. If there was more dwell time like in the drip coffee maker cup filter, it might make for a richer coffee. I wonder if you can make the plastic filter with smaller or fewer holes, so the coffee grind can interact with the water a little longer. – From Leslie O.
Our scoop is much larger than the spoon that comes with most drip makers. The seep-through rate is determined by the fineness of grind and the amount of grind, not the perforated cap.
Try two of our scoop and a fine grind to get a rich brew.
Extending the time to 3-4 minutes as you describe will result in a more bitter brew. The object of the air pressure is to shorten the wet time to reduce bitterness. You should notice the sweeter result from pressing according to our instructions.Share
Hi Alan! I LOVE MY AEROPRESS! but i am curious what your best suggestion for NUMBER of grind to ask for. I find if it's too fine (espresso grind) it is hard to press down, but if it's too coarse, the water runs through too quickly while you're still stirring it. So is there a standardized number to ask for, the best grind number for you? At my local espresso bean place they didn't know about aero press so I usually just say "please grind one notch less coarse than espresso" but that's kind of cumbersome…. Is there a standard grind number?? thanks! – From Amy S.
Hi Amy, Thank you for your kind words. There are many different makes and models of grinders and they use different numbers. So rather than numbers, we recommend espresso grind for one scoop per pressing and midway between espresso and drip grind for two scoops per pressing, and standard drip grind for three or more scoops per pressing. Please remember to press gently because pressing hard compacts the puck and blocks the flow.Share
I love the aeropress! It makes the BEST coffee! Any chance you'll invent a milk frother made in the USA? Any suggestions for frothing milk? – From Kate C.
I don’t comment on our product development plans but I can say that I find the small battery powered hand held frothers work very well.Share
Hey Alan, how often do you change the rubber seal? – From Martin M.
I remove the rubber seal every several months and brush it off under warm water. Originally we made the AeroPress rubber seals out of thermoplastic elastomer which lasted about five years if properly cared for. For two years now we have been making the rubber seals out of silicone. We expect our silicone seals to last longer than the old ones made of TPE but we really don’t know how long they will last. I have never personally had a seal wear out.Share
The original Aeropress's paddle is designed that won't scrape the paper filter when we stir the coffee. But I don't see the Aeropress Go's paddle is designed this way. Is there any hint/secret behind this? – From Pham T.
The AeroPress Go stirrer needed to fit inside the packed up AeroPress Go, so we had to forego that feature. But we rounded the tip so that contact would be unlikely to tear the filter.Share
Hey Alan, what is your current brewing recommendation? – From Martin M.
Have you tried room temperature water? It makes a delicious brew.Share
The AeroPress has changed my life for the better since 2015.I can't believe the years of bad tasting coffee in a decanter being warmed that I have endured over the years.I love the elegance and the ingenuity of the AeroPress design —And the affordability of the units makes me happy.The one thing I would request for the future is for the Aeropress to be offered in optional clear color again. I think it would be slightly easier to see the markings and kind of fun to see what is happening when brewing.Once again, thank you for an amazing product. – From John C.
We would love to make the AeroPress clear again. But the material we currently use is more durable than the clear alternatives and we chose durability.Share
Hi Alan, Hope your well. Thanks to you, and your team, for being so dedicated to one amazing product. It certainly proves that it's better to focus on doing one product well than pushing out new items for the sake of it. I was wondering, what is the average life expectancy of the new silicone seal? since it won't be as severely affected by coffee oils like the previous rubber one. I know this is hard to answer as everyone's usage will be entirely different and grind / origin will also play a part but I assume some testing was done and showed a increased life expectancy of x% ? Please keep up the amazing work and I hope you and the team still get as much enjoyment from what you do as those who use the aeropress each and every day of which I am one voice amongst millions. Kind regards, Kenny – From Kenny P.
Kenny, thank you for your kind words. I truly enjoy hearing about your enjoyment of our product. We don’t have an increased life expectancy number for our change to a silicone seal but we are quite confident it is substantial.Share
Hello. Can you tell me what it is which makes your coffeemaker produce a smooth cup and with a remarkably low acidity. Thank you Bernard. – From Bernard St-L.
The AeroPress brews faster than gravity drip methods, because of air pressure. The short time extracts rich flavor and leaves the bitterness in the grounds. And, of course, the AeroPress allows you to use any temperature water. 175F (80C) water is the overwhelming favorite of many tasters. If you haven't tried that you owe it to yourself to give it a try. Now we've discovered that AeroPress can brew in two minutes with room-temperature water. That brews the smoothest cup of all.Share
Hi Alan, Long-time barista through college here (now working a suit and tie job). Your Aeropress is my go-to every day. What is the best way to store the Aeropress after use? I usually separate all the complements and air dry them on a towel. Thanks! – From John G.
Your procedure of separate and air dry is excellent. To make storage more compact you can leave the plunger pushed all the way through the chamber so the rubber seal protrudes and is not compressed inside the chamber. Let me add a suggestion. Remove the rubber seal from the end of the plunger every couple of months and clean the seal inside and out and the tip of the plunger.Share
Hi Alan, love the press, been using it for many years. Instructions state that you should stop pressing when you feel enough resistance. That is above when the seal hits the puck, right? I read that it will reduce the bitterness of the coffee, is that true? But, pressing all the air thru the puck will also add the oils to the coffee to increase the flavor/taste, correct? So, what is the deal and trade-off? Thanks – From Cosmo B.
Our instructions say to press until the plunger reaches the puck. There are a zillion AeroPress tips in the coffee world and one says to stop pressing when the flow of liquid has turned to hissing air. I have a sensitive palate but could not detect any difference when I tried that.Share
What is the pressure, in bars, that the Aeropress makes coffee at? Asking for a friend. – From Jackson B.
I encourage pressing gently when brewing with an AeroPress and gentle pressure in an AeroPress equals about 1/4 of a bar. If you press hard, the pressure will be about ½ of a bar. We conducted extensive taste tests and the amount of pressure applied did not affect the taste of the coffee brewed.Share
what is the optimal temperature of water for a good espresso cup and how long should I let the water sit before stirring and pressing – From Wini W.
More than a dozen subjects, ranging from coffee professionals to every day coffee drinkers chose 175F (80C) as the water temperature which yielded the best flavor. The short steep time resulting from ten seconds' stirring also contributed to the best flavor. Since the original testing, we've found that a stirring time of a minute when brewing with room temperature tap water yields excellent flavor.Share
Hi Alan! Thanks for inventing the Aeropress. I was wondering, who is Robin Sam? As a native of Denver, Colorado myself, I'd love to know. Thanks! – From Matthew W.
Robin Sam is a consumer that commented on the AeroPress.Share
Hi Alan – I love your product. I use it every morning. My question is what burr grinder do you recommend, if any? And what coarseness do you recommend? – From Aldo S.
We do not recommend on our website products of other companies so I cannot recommend a particular burr grinder. My advice on coarseness is to use finely ground coffee. You will get a rich extraction. If pressing is too difficult with the amount of coffee you use, back off a little in the fineness until your gentle pressing takes about 30 to 60 seconds.Share
Hola Alana, queria saber donde son fabricadas las maquinas si son MADE IN CHINA o MADE IN EEUU – From Marcela J.
AeroPress coffee makers are made in the USA.Share
What kind of beans would you recommend? Espresso beans or filter beans? Does it even matter? Thanks!! – From Ryan C.
Taste is personal. I recommend you try different origins and blends and also try different roasts. Light roasts tend towards sour. Dark roasts tend towards bitterness. Medium roasts are most popular. Medium roasted beans are about the color of milk chocolate.
So called "espresso" beans are often misnamed. In most of the world "espresso" has become a meaningless word for coffee. But in Italy espresso blends are mild because Italians drink espresso straight. The AeroPress is already mild. So brewing Italian espresso blends in the AeroPress might tend towards flat. But, of course, taste is personal. My current favorites are medium roasted Yirgacheffe beans and medium roasted Guatemala beans.Share
What is the difference between the original gold print aeropress and the new version with red print? – From Cora Jean T.
We liked the appearance of the red print so we switched.Share
What’s the hexagonal funnel for? I can’t find pictures showing its purpose. – from Ramsey S.
Many people measure the amount of coffee they wish to use at the beans stage and then put the beans into their grinder. The funnel is designed to facilitate pouring from a grinder bin directly into the AeroPress chamber. Some people have tried using the funnel to facilitate pressing into smaller mugs. We did not design the funnel for this use and strongly advise only pressing into a large, sturdy mug.Share
Hey there, I would like to learn if i can make ice tea with aeropress. – from Georgios-Marios M.
Yes, many people report that they use their AeroPress to separate tea from tea leaves which means you can certainly press tea over ice and make iced tea. I steep the tea leaves in a measuring cup for a few minutes. Then pour the slurry into the AeroPress to filter out the leaves.Share
What's your favorite coffee recipe with AeroPress? – by Vít M.
Every morning I press two scoops with water to level 2. That produces espresso-strength. Then I add some milk and nuke it for 45 seconds in our microwave.Share
Will you Aeropress replace PP with Ttitan? – from Yulian D.
We replaced Tritan with polypropylene (PP) because PP is more durable.Share
Hey, Have you thought about producing a Non-Bleached filters? I for one rather by this off you over a bleached option. Thanks. – From Morgan K.
We did a market test comparing sales of bleached vs. non bleached AeroPress filters and the bleached ones far outsold the unbleached ones. Then we did a blind taste test comparison and coffee brewed using a bleached filter was overwhelmingly picked over coffee brewed using an unbleached filter. Together with the fact that gaseous chlorine is no longer used in the filter paper bleaching process these tests convinced us to continue using bleached filters.Share
Is there a reason the pattern of holes on the filter cap for the AeroPress Go is slightly different than the one for the original AeroPress? – From Jon R.
No special reason. Both patterns function equally well.Share
I’ve had my Aeropress for a year or so and I really love it. Lately though, I’ve had trouble with the plunger “bouncing” back up when I try to press it. I have to mess around with placing the plunger into the chamber a few times before I can get it to actually press down. Do I need a new rubber seal, and if not, what gives? Thanks. – From Tedde Rae A.
It is normal for the plunger to feel a little "springy". The compressed air in the chamber is an "air spring". But remember too, that if you press hard it compresses the puck of coffee and blocks the flow. So press gently and wait 30 to 60 seconds for the liquid to flow through. Also, you may want to try a coarser grind.Share
Why would water/coffee go thru the filter prior to pressing? When I pour hot water to the one cup level and stir about half of the liquid is gone before I start pressing. – From Patty M.
Please use a finer grind of coffee. Also, remember to give the AeroPress a shake to level the bed of coffee before adding water.Share
Hello Alan. I would like to ask what´s the capacity of the scoopr and the aeropress? How many scoops per full aeropress do you recommend? Thank you for this amazing invention. – From José Alberto G.
The capacity of the AeroPress scoop is between 12 and 14 grams of ground coffee depending on how rounded you fill the scoop. If you use one rounded scoop and fill the AeroPress with water to the top, you will brew about 8 oz. of American style coffee. If you use 3 rounded scoops and fill the AeroPress to the “3”, you will make enough espresso style concentrate to make 15 oz. of American style coffee by adding hot water.Share
There are articles around the internet indicating you had pitted the Aeropress against the Clover machine back in 2006 at SCAA. What were the results of the taste tests and also, what do you see as the major differences between these two brewing methods? – From Dan T.
Here's a description of the event. http://coffeegeek.com/forums/coffee/machines/226736#226736. The biggest difference is the price. At that time the Clover sold for $8,000. Later the price went higher.Share
Not a question, but an observation: I always thought the funnel was for when the vessel you are pressing into is smaller than the puck. I use the funnel because I often brew my coffee into a hydroflask thermos. The funnel fits perfectly into the opening and I can brew directly into the container. Did I read that somewhere? Thanks for your genius invention!!!:) – From Jim L.
The use of the funnel that you described was just coincidence. I designed the funnel to facilitate pouring ground coffee directly from the bin of a grinder into an AeroPress chamber.Share
My base of my aero press is leaking such that the coffee drains through. No need for the plunger. What can I do about it? The filter component fits secure. – From Gina S.
Use a finer grind of coffee.Share
Hi Alan, Enjoy my aero press and it has now converted me to preferring my coffee without milk. I am finding that during the stirring, the hot water is rapidly going through the filter before I fit the plunger, hence only half of the water is under pressure. Is this correct? Thank you – From Tim T.
Try using a finer grind of coffee. It will slow the water going through the filter and result in a richer extraction.Share
Do you folks offer a 2 cup model. I love single serving model and use it everyday with my encore grinder. By the way I love my aero press, thanks Tim – From Tim F.
The AeroPress is designed to make 3 shots of espresso style coffee with one pressing and those shots can be made into 3 cups of American coffee. If you prefer to press all the water through the grounds, then it just makes one cup of American coffee with each pressing. As of now, we do not offer a larger model.Share
Can I get an additional mug with the AeroPress Go?? Preferably one that fits inside the other for ease of storage and portability. – From Jeff B.
We sell all AeroPress parts but we only make one size of the AeroPress Go mug.Share
HOW do you remove the rubber plunger tip? I CANNOT get it off!!!! – From Jodi D.
The silicone rubber seal just fits on the end of the plunger. You can remove it by prying it up on one side or grabbing it hard with a towel.Share
What is your answer to this statement? You don't want water at 175, which would end up being just warm after using the press. You want it much hotter. They claim 175 because any hotter you will release toxins from the plastic to your coffee. It should be made from ceramic or glass. Never use hot liquid with plastic for long repeated periods of time. Use some logic, not just the stats. – From Ira S.
Our recommendation to use 175 degrees F water for brewing coffee is purely because our blind taste tests with both coffee experts and every day coffee lovers clearly showed that they preferred the taste of coffee brewed using water of that temperature. You can use hotter water in your AeroPress without any concern about the materials of the AeroPress. We recommend you do your own taste tests with coffee brewed using different temperatures of water to determine your preference. The statement about drinking temperature touches on a widespread misconception. People often say they like their coffee really hot but if you measure the temperature of the hottest coffee they can tolerate, it will be in the 135 to 145 degrees F range. We have done this test. We have heard from users that they formerly liked to drink it very hot because that masked bitterness. They reported that AeroPress brew is so low in bitterness that they enjoy it at moderate temperatures. I myself enjoy coffee at any temperature, cold, room-temp or about 125F.Share
This is not so much a question as a rave review. I bought an Aeropress for my wife for making coffee backpacking and she was so impressed With it the first time she used it that she unplugged and donated her expensive home countertop coffee maker because the Aeropress coffee was better, simpler, faster, easier clean up, Etc. It is delightful to own such a product that is so simple, affordable, and effective. Thank you for the time and effort you took to bring this product to market. – From Peter W.
Thank you for your comments. I get great satisfaction from hearing about people enjoying my inventions.Share
What's the best way to maximize the crema with the aeropress? Thx! – From Anders S.
One of the best kept secrets in coffee is that crema is bitter. Renowned coffee author Kenneth Davids wrote about the origin of crema in Italy at Gaggia, developers of home espresso machines. The engineering department was fretting about what they called "scum" on the coffee. But the marketing departments said, "No worry, we'll call it crème naturale".Share
Hi Alan, I have been pre-washing the paper filters with the hot water to make sure no chemical residue is part of the coffee. Do you know the level of bleach or processing chemical residues if I don't pre-wash. If you are familiar with Dioxins, they used to be a problem in paper, and they are not nice things to consume. Thanks…Rich – From Richard F.
Filter paper manufacturers stopped using the gaseous chlorine bleaching process decades ago so dioxin is no longer an issue with paper coffee filters. They also thoroughly wash the filter paper they produce so pre-washing AeroPress filters is unnecessary. Taste tests have confirmed that nobody can taste the effect of pre-washing or pre-wetting AeroPress filters.Share
Hi. In not sure how to tell the year if my aeroP model ? I thought it was pre 2015. It does seem to have gold tint lettering but i cant post a picture here. I have seen the materials over time diagram.. im wondering if mine is polycarbonate ir copolyester ? – From Anthony H.
As you already know, you can see the various materials and printing used in the manufacture of the AeroPress over the years by visiting https://aeropress.com/use-it-now/evolution-of-aeropress/. You can see that we never made a polycarbonate AeroPress with gold lettering so your AeroPress cannot be made of polycarbonate.Share
Hi. We've been a fan of the aeropress for some time along with good friends of ours. We recently visited them and noticed that their plunger had little ridges on it to help stabilize it when pressing it down. My friend purchased his aeropress years before we did. Our aeropress and a new one he purchased (as a spare) have smooth plungers. Is it possible to purchase the plunger with ridges/grooves any where? Thanks! – From Jennifer L.
After a few years we learned that the ridges on the plunger were causing scratches on the inside of the AeroPress chamber. The scratches were not deep enough to affect performance but they were unsightly and the ridges provided no benefit so we eliminated them.Share
I have had my areopress for three years. I took several months off from using it and began using it again on a daily basis a couple months ago. It worked great for few weeks, but recently it has become impossible to press down the plunger no matter how hard or gently I press. Do I need a new seal or a whole new plunger? – From Julia S.
Sticky coffee oils can build up in the chamber. If the inside of the chamber feels sticky when you drag you finger on it, then clean it and the rubber seal with vinegar. After that wipe a bit of vegetable oil on the edge of the seal that contacts the chamber.Share
Help!! I've used my Aeropress for years, with one replacement of the rubber seal. Three months ago I got a new Capresso Infinity grinder which was working just fine, set around the middle of Fine or between Fine and Extra Fine. Things were good. All of a sudden, about a week ago, I can no longer push the plunger all the way down. It stops about 3/4" from the bottom. My husband couldn't even move it. I can push it all the way down only if I use a grind so coarse that the coffee tastes like water. Same coffee, same water, same batch of filters. Pushes out OK when I remove the end cap. I've put in a call to Jura because I think it has to be the grinder – but is there any possibility that it's the Aeropress? Any advice? – From Ellen M.
Sticky coffee oils can build up in the chamber. If the inside of the chamber feels sticky when you drag you finger on it, then clean it and the rubber seal with vinegar. After that wipe a bit of vegetable oil on the edge of the seal that contacts the chamber. If the problem persists, then it probably is the grinder. Remember too, that it's easiest to press gently.Share
The instructions says I can brew up to 3 servings. But why is there four level marks on the chamber? – From Erik H.
We originally stated that you could make 4 servings per pressing but some people reported that four scoops of freshly roasted coffee together with hot water filled to the 4 would spill over the top so we now recommend 3 servings max. We left the numbers as they were on the chamber.Share
Are filters compostable? – From Candice B.
AeroPress paper filters are both reusable and compostable.Share
I would like to know filters specificities, like: composition and pore size (paper and steel) and what is the difference between use both kind of filters. Thanks! – From Bastian J.
Most of the filtering is accomplished by the bed of coffee. Only a bit of grind at the bottom of the bed is filtered only by the filter. The pore size of paper is much finer.
We do not recommend metal filters. Google coffee + cholesterol and read how paper filters block two unhealthy chemicals which pass through metal filters.Share
I’d love a larger model so I could make a bigger americano every morning, instead of brewing twice for two cups. Any chance we will see any Aeropress XL? – From Andrew M.
Press two or three scoops. Then dilute to an Americano.Share
Step 6 of the printed instructions included with my aeropress state 'fill to 2'. I see that the downloaded version states 'fill to 1'. Which is correct? Electric kettles are hard to find here in Italy, let alone ones with temperature control. Waiting 17 minutes is not a realistic option, nor is measurement. Any other suggestions for achieving optimum water temperature, please? – From Mike S.
Put a dial thermometer shaft in your kettle. Either through the spout, or through a small hole that you drill in the top. When the kettle starts "ticking" watch the thermometer and stop heating when it nears 80C. Share
I recently cracked my favorite mug while using the aeropress. I am devastated, it was a beautiful custom-made ceramic red, the handle was perfect, I loved it…what to do, I didn't think I was pressing too hard. Help!!! – From Patrice S.
We recommend pressing gently (about 12 pounds). That gives the shortest time and the smoothest flavor.Share
First of all, I want to thank you for inventing such an amazing coffee brewer..! I immediately fell in love with this as soon as I taste iced latte made by aeropress. I usually drink iced latte and very picky about it haha. But aeropress made me surprised by the genuine taste of esspresso!! I always use specific milk(oatly) and 2 espresso shots, and here is my question. If I want to make strong 2 shots, how many scoops of coffee bean should I put? And until what level (1,2,3) should I pour water? I tried several ways but not sure what is the best. I hope to hear from you soon!!! – From Suran L.
I make myself a "double-latte" every morning. I press two heaping scoops of coffee with water to between numbers 2 and 3. Then I top off the mug with about 6 oz of whole milk. Sometimes I drink it cool, other times I heat it for 45 seconds in our microwave. But really there's no "best" way. Whatever you like is best for you.Share
1) What is your coffee recommendation for Aeropress? Ethiopia, Burundi, Brazil? 2) Is there a difference in measurement between the Aeropress and Aeropress Go scoop? – From Ali H.
1) I find that you'll like your previously preferred coffee in the AeroPress.
2) It's an illusion. Both scoops have the same volume.
As I push my plunger down some coffee leaks through the rubber seal and ends up in the hollow interior of the plunger. How does it get past the seal? The plunger is stored inside the main part and it has never been in a dishwasher so why does this happen? – From Frank G.
Your coffee is leaking around the rubber seal. With use the seal eventually will become loose and let some coffee leak around it. You wrote that you store the plunger inside the main part. The AeroPress instructions advise against storing the seal inside the chamber because holding the seal compressed inside the chamber eventually will reduce the size of the seal, enabling coffee to leak around it. When your seal becomes loose, you can buy a new seal on this website. The seal can easily be replaced on the end of the plunger.Share
Ive been using an aeropress for 5 years now. Love the coffee flavour and convenience. My only suggestion is that you make one that makes twice the volume so i can do my wife and my coffee at the same time. Basically i reckon the go travel version with its own stackable 2 cup jug would be a hit. If you think this idea has legs please just send me 6 of the completed product that I can share around friends and family. – From Kent H.
Thank you Kent. Are you pressing concentrate, then diluting as we recommend? Press 3 scoops, then dilute for 3 servings. Coffee brewed this way is sweeter than when you press all the water through the puck.Share
What’s that clear glass mug you use in the demo? I’d like to start with something like that that I can depend on as sturdy and can see through. – From Jeff B.
Do a search for “Directoire Clear Glass Mug” and you will find lots of candidates.Share
I have to use all my strength plus upper body weight to depress the plunger. Sometimes brew shoots out the sides of the top of cup in the process. I follow all Aeropress instructions, use both inverted and upright press positions, and Starbucks ground coffee. I store the maker with plunger inside tube and use Aeropress filters. I have read several letters from others who were unable to resolve the issue. What do you recommend? P.S. The coffee once made is very good, though. I don't want to give up on it. Thanks. – From Christine D.
We recommend pressing gently and having patience when brewing with an AeroPress. Try it. You will be surprised. That's because pressing hard compacts the bed of coffee and blocks the flow.Share
Why use scoops instead of grams, and what is the ideal grams? – From Abe E.
Measuring the weight of coffee is more precise than using scoops but I think the precision of scoops is good enough for most people. A rounded AeroPress scoop, which is our recommendation, holds about 14 grams of ground coffee.Share
Hey Alan, Long time fan of the Aeropress here. It's a life saver. I always take it with me on deployments and normally end up having to make coffee for the other guys after they give it a try. Just discovered your cold brew method. What kind of roast do you recommend for the cold brewing method i.e. light, medium, dark . . . .? – From John H.
I prefer medium roast. Light roasts tend towards sour. Dark roasts tend towards bitter.Share
I’m trying to get the most sweetness out of my coffee without adding sugar. What do you recommend? – From Michael C.
Hey, Alan! Could u please tell me about the funnel. A lot of people use it for coffee (I mean they grind beans and after use funnel). But shape of funnel is fit with bottom of AeroPress, so u can use it for brewing also. Am I right? – From Marina A.
I designed the funnel to help pouring of ground coffee from a grinder bin into the AeroPress chamber. It was a coincidence that the AeroPress fits into the funnel. Some people have used it to press into a small cup. That's dangerous. Always press into a sturdy mug.Share
Hey Alan! What’s your thoughts on brewing a concentrate to be diluted (ie. to make 237ml) vs brewing an exact amount (ie. 237ml from the start). – From Ernest L.
I recommend brewing a concentrate and diluting after the pressing. This tastes sweeter and smoother than pushing all of the water through the bed of coffee.Share
I’d love to see some of your prototypes for the aero press. Not really a question but it’d be interesting. – From Ben K.
Do you recommend Aeropress Go for home use as well? My current Aeropress numbers are not as visible anymore and seal leaks air sometimes when pressing I'm considering replacing it with Aeropress Go. My Aeropress is my favorite device I have ever owned. Thank you, Allan. – From Jim M.
Certainly the AeroPress Go will work fine in your home. The AeroPress Go is a somewhat smaller AeroPress that includes a cup and lid for use for pressing and drinking and also as a carrying case when on he go.
I am sorry the numbers on your chamber are not as visible anymore. You can mark the outside of your chamber with a Sharpie pen.
Your seal leaking is an indication that your seal is worn. You don’t need to buy a new AeroPress. Just buy an inexpensive replacement seal on our website, aeropress.com. Thank you for being such a fan of the AeroPress.Share
As we all know you designed the Aeropress to brew in classic way so what do you think about the invert way to brew? And did you imagine in the ways that arose in its use? – From Santiago C.
Users have invented many different ways to use the AeroPress, including the inverted way. We don't recommend that because we don’t want people to get burned. But you can extend the steeping time by inserting the seal a half inch or so into the top of the chamber and thereby stopping any drip through until you start pressing. But extended time adds bitterness.Share
The rubber on my Aeropress got sticky, and it's hard to use. what could I do to fix this or what could I do to prevent the sticky rubber? – From Marcelo F.
You can clean off the sticky material by removing the seal from the end of the plunger and then aggressively washing your seal with very hot, soapy water and a paper towel multiple times if needed. The stickiness tends to occur when an AeroPress has been sitting idle so a way to avoid stickiness in the future is to use your AeroPress regularly. Alternatively, you can buy an inexpensive replacement seal from our website, aeropress.com. We now make the seal of silicone, a material that will not develop stickiness.Share
Are you working on any new coffee products? I would love to see a wider product range for Aeropress! – From Naty S.
Yes, we definitely are working on new coffee products but (like most companies) new product plans are confidential.Share
My partner bought me a new aero press for my birthday. We have used a friends before. When we use it (first time and second) the water falls straight through (doesn't drip). Is it faulty? We have followed the instructions and video – my friends lets water pass slowly, this just falls through. Thank you for your help. – From Olwen D.
It is normal for a small amount of coffee to drip through prior to pressing. If you are experiencing an excessive amount of early drip through, you need to use a finer grind of coffee and to give the chamber a shake to level the bed of coffee. One way to confirm that the grind is the problem would be to brew using your friend’s ground coffee in your AeroPress.Share
Long time AP user but I do have one concern. What about the AP chamber makes it safe to put near boiling water into plastic for daily use. Wouldn't the temperature be dangerous to drink from plastic? – From Adel H.
We only use plastics that are rated to be safe for use in contact with hot food during preparation. Specifically, the rubber seal is made of silicone, a material commonly used in cooking such as for cupcake baking pans and flexible spatulas. All the other materials used in the manufacture of the AeroPress are polypropylene which is probably the most common plastic in your kitchen. It is for example the material of choice for most drip coffee makers.Share
How to lubricate Aeropress? Thanks. – From Vincent P.
I sometimes use some olive or other cooking oils to lubricate a new AeroPress seal but once an AeroPress gets into regular use, I find coffee oils provide enough lubrication.Share
Is it possible to get copies of either notes or videos of lectures on aerodynamics by Doctor Adler? I recently found a roughly 30 minute lecture on YouTube and was hooked!! Particularly by his clear way of illustrating how gyroscopic precession predictably affects a cardboard disc in flight! I would love to see and hear more from this great mind!! – From Grant S.
My 37 minute aerodynamics lesson is the only aerodynamics video available. But here are some other videos that might interest you.
My sons and I LOVE our Aeropress!~ I recently purchased one for myself, so we have two in our home currently. Our question is is there a larger version of this fabulous coffee press available? If not, would the company consider making a larger version for it's devoted customers, to make two to four cups at a time?? My eldest son, has to run two presses at one time for his ice coffee fix. We all agree, it would be a wonderful addition to the original press and great increase in sales opportunity… we'd purchase an additional larger version to keep in our home! – From Karen C.
Thank you for contacting us. Yes, we are considering a larger AeroPress, but you can make large quantities with your existing AeroPress by brewing 3-scoop espresso-strength concentrates according to the instructions which came with your AeroPress and are repeated here: https://aeropress.com/use-it-now/getting-started/#steps.
It only takes a few minutes to do each 3-scoop pressing. Each makes 3 servings of American coffee or latte. I store the concentrate in my fridge, then add water for American coffee or milk for a latte when I want to drink or serve it.
Why are some days "Hard Press Days" and some "Easy Press days"? I've always thought it has to do with barometric pressure and even thought of making an Excel sheet to figure it out, but I always forget once I have my nice Aeropress coffee in hand. 😉 – From Kae E.
The more coffee and/or the finer the grind, the more important it is that you press gently. Because pressing hard (even briefly) will compact the coffee and block the flow. So always press gently and be patient. It might take 60 seconds or longer.Share
Is AeroPress designed to last for a lifetime? – From Titta J.
What is the coffee funnel used for? – From Lynnett "Lynne" D.
I designed the funnel to facilitate the pouring coffee grounds from a grinder bin directly into the AeroPress chamber.Share
Why the big paddle? Is there a reason it’s flat and so large? Why not something smaller more the size or a teaspoon? – From Rob E.
For a single scoop, any stirrer is fine. But a wide paddle is better for double and triple scoop pressings to insure that clumps of dry coffee are fully mixed.Share
Is the AeroPress Go cup microwave safe? If not, can you make one? Would be a nice way to heat up the water for the coffee when on the go. – From Jordan W.
Yes, the AeroPress Go mug is microwave safe.Share
Do you like football? If yes, tell me your favourite team and player. – From Piotrek K.
Yes, football used to be the only sport I watched. I followed the 49ers and Stanford, where I taught part-time. But I (and my friends) began to feel guilty about players sacrificing their health for our entertainment. So I backed away somewhat. But I confess following the 49ers last year.
Favorite players (current): Jimmy Garoppolo, George Kittle, Arik Armstead, Nick Bosa, and Christian McCaffrey (who went from Stanford to the Panthers).
Favorites (retired) Jerry Rice, Joe Montana, Steve Young. I could name many more greats, but these are the players that I often watched. I've briefly met Montana and also Y.A. Tittle.Share
Why don’t you offer metal filters?
Coffee which has been only metal filtered contains two unhealthy chemical which increase your LDL cholesterol.
Paper filters remove these unhealthy chemicals.
Furthermore, blind-tasting tests that we conducted with coffee professionals and every-day coffee lovers revealed a decided preference for paper filtered coffee.Share
Will you ever make an AeroPress big enough to fill a carafe with one pressing?
We don't currently offer a larger model. But you can prepare concentrate in a few minutes before the arrival of guests. Just press a couple of triples (3 scoops each) and put it aside. Then, after dinner you can dilute the concentrate for American coffee, add milk for lattes, or offer straight concentrate as a very smooth espresso.
You can also press some concentrate and take it to work in a small container. Then dilute and drink it at work.Share
I have heard that with the AeroPress you can experiment with the brewing process. Can you please explain?
With AeroPress, all of the brewing process variables are under your control. The variables are water temperature, grind, amount of coffee and amount of water.
When you follow our printed instructions you make espresso-strength brew, which is 4 times more concentrated than American coffee. Our instructions are to dilute this concentrate with water to make American coffee or with milk to make a latte.
Some people are surprised that we press espresso-strength, then dilute. But that makes the smoothest brew. Pressing all of your water through the grounds will taste more bitter.
If you would like to experiment, here are some ideas:
- For richer strength, use more coffee and/or finer grind.
- For more "bite", use hotter water. But keep in mind that in our blind-tasting tests, coffee professionals and every-day coffee lovers preferred AeroPress brew made with 175F (80C) water. So try that first.
It takes 17 minutes for a small kettle to cool down from boiling to the optimum 175F. The easiest way to get the right temperature is with an adjustable-temperature electric kettle which stops heating at your set temperature. It's fast and consumes less energy than bringing the water to a boil.Share
I was surprised to learn that the AeroPress can be used to brew cold brew. Do you drink cold brew and if so, how?
I enjoy drinking cold-brewed American coffee or lattes at room temperature. But you can also chill the brew with ice or heat it in your microwave oven if you wish.
You should definitely try our cold brew instructions. It only takes a minute longer and you'll be amazed at how delicious it tastes.Share
What's the best grind for AeroPress?
Ordinary drip grind is about right for pressing 3 scoops. But for single servings, espresso grind will give you more flavor for your money. I often set a grinder about halfway between drip and espresso. You can do that at home if you grind at home, or with the your store's grinder.
If pressing takes longer than 60 seconds, use a coarser grind. If it presses faster than 30 seconds, a finer grind will give richer flavor for the same amount of coffee.Share
How long does your pressing take?
It takes 30 to 60 seconds, depending on the amount of coffee and the fineness of grind.Share
Why press gently?
Pressing gently is fastest. And fastest gives the smoothest brew. If you press too hard it compacts the bed of coffee and blocks the flow. I like to press into a clear mug and see individual drops fall. That's about 12 pounds of force.Share
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