AeroPress Flow Control Filter Cap

The standard AeroPress filter cap does its job well, but it has one limitation: as soon as you add water to the chamber, gravity takes over and coffee begins to drip through before you’ve finished steeping. For most recipes this is barely noticeable, but if you’re brewing with a coarser grind, extending your steep time, or trying to push the AeroPress into espresso-style territory, that early drip-through can undermine your extraction. The Flow Control Filter Cap solves this with a pressure-actuated valve that stays firmly closed until you begin pressing. Nothing leaves the chamber until you choose to release it.

In practical terms, this opens up a lot of recipe flexibility. With the valve sealed, you can steep for as long as you like without losing consistency, which makes the cap particularly well suited to cold brew, longer immersion recipes, and anyone brewing with pre-ground or coarser coffee. When used with a paper micro-filter and a dark roast, the pressure build-up during pressing produces an espresso-style crema that the standard cap simply can’t replicate. It also works cleanly with a metal reusable filter, or with both paper and metal together, giving you meaningful control over how much oil makes it through to the cup. As an added bonus, once you’ve pressed, the valve stays closed so you can lift the AeroPress directly off your mug and set it on the counter without any drips or mess.

Compatible with the AeroPress Go Plus, AeroPress Original, AeroPress Go, and AeroPress Clear.  Not compatible with the AeroPress XL. Note that AeroPress advises against use with Original models manufactured before 2014, as a change in chamber material may affect the fit of the cap.  Filters are not included and are sold separately.  Easy to clean with a quick rinse, or on the top rack of the dishwasher.