From Fellow:
Prismo is a pressure-actuated valve designed to be used with the AeroPress® Coffee Maker. This attachment allows for a build-up of pressure to brew espresso-style coffee and creates a no-drip seal for recipes that normally require inverting your AeroPress®.
To eliminate the need for paper filters, a reusable 150 micron etched filter stops sludge in its tracks and fits directly over your favorite espresso glass to “pull a shot” at home. Espresso-style, full-immersion, cold brew, hot/iced tea, americanos, and more—endless recipes are just one plunge away!
Pressure-actuated valve:
The secret weapon for “pulling a shot” without an espresso machine. Prismo’s special valve stays sealed until you press down and creates a build-up of pressure to brew coffee with a consistency closer to espresso than the AeroPress® Coffee Maker on its own.
No Drip Seal:
Ditch the flip. Brew full-immersion coffee without inverting your AeroPress®. Leave your AeroPress® in the fridge overnight upright for cold brew without a single leak. Let your tea steep without having to turn your AeroPress® on its head. Prismo’s no-drip seal keeps your caffeinated contents contained until you say so.
Reusable:
The sustainable 150 micron etched fine metal filter stops sludge in its tracks and eliminates the need for AeroPress® paper filters. After plunging your Prismo, pop the coffee puck into your compost bin and give the metal filter a quick rinse.