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.