The AeroPress Flow Control Filter Cap replaces the standard cap with a valve that seals until pressure is applied. That stops the drip that normally happens while the coffee steeps, so nothing passes into your cup until you decide — the difference that lets you experiment with longer steeps and finer grinds without over-extraction.
Use it for recipes that need a full, controlled steep: cold brew, iced coffee, bold espresso-style concentrate, or milk drinks like lattes. Twist it onto a standard AeroPress in place of the regular cap, add your paper or metal filter as usual, steep as long as the recipe calls for, then press to release.
AeroPress was founded by inventor Alan Adler in Palo Alto, California, and manufactures the standard Flow Control cap in the United States. The company is known for turning a simple manual brewer into a platform coffee enthusiasts build entire recipe libraries around.
