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.
- previous post: 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.
- next post: 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.