Turbidity refers to the cloudiness or haziness in a liquid caused by suspended particles or impurities. In coffee, it’s often caused by tiny coffee grounds, oils, and other compounds that make their way into the final brew because the filter material has too large pores or pressure has been involved.. Here's why I decided to try the Flow Control: ability to use paper filters, the Prismo (or at least mine) doesn't always seal perfectly and I've had some annoying leaks, the Prismo is too big for some of my cups.

This innovative accessory uses a pressure-actuated valve to eliminate drip through and maximize control over the brew process. Unlike others, this cap fits perfectly on all AeroPress coffee makers, including the new AeroPress Clear, and can be used with metal and paper filters – together or separately. Now you can make espresso-like crema and experiment with coarser-ground coffee.Sidenote: Alan Adler was always very conservative when it came to releasing new products, but the new owners have already announced a range of new gadgets to be released soon

COFFEE PRESS FLEXIBILITY – Fits all AeroPress coffee makers, including the new AeroPress Clear. (Coffee press not included.) When used with a paper filter and dark roast coffee, the AeroPress Flow Control Filter Cap uses a build-up of pressure to create an espresso-like crema. By the way; the Prismo can be used with or without a paper filter – depending on your preference. AEROPRESS FLOW CONTROL FILTER CAP

What Filter Makes the Best Crema?

Controlled Brewing - Simply attach the cap to any Aeropress coffee maker to stop drip through, no need to use the inverted method! Above all, this also allows you use a coarser-ground coffee and longer brew times before pressing The Flow Control fits better in the Aeropress and also fits in much smaller glasses. I didn't taste any difference in my immersion brews with Aeropress's re-usable metal filters, and the paper filters gave me a slightly cleaner taste and thinner mouthfeel which I will probably gravitate towards, especially if I can coax out some florals with it. It’s also much easier to grip and remove from the Aeropress. Personally, I favor clarity (so that means paper filtration), but if you like something else, then by all means go ahead. The Flow Control filter cap fits perfectly on both Go and the regular AeroPress. And it can be used with metal and paper filters, together or separately, for maximum brew versatility.

The patent-pending Flow Control Filter Cap is an innovative new accessory that uses a pressure-actuated valve to eliminate drip through and maximize control over the brewing process. By attaching the cap to any AeroPress coffee maker, users can now create an espresso-like crema and experiment with a coarser grind of coffee, including pre-ground medium. Best of all, due to the innovative design of the small valve on the cap, the same pressing motion AeroPress users are accustomed to now creates significantly greater air pressure, further enhancing the already rich, full-bodied, and delicious flavor of an AeroPress-brewed cup of coffee. The AeroPress Flow Control Filter Cap is compatible with both AeroPress Original and AeroPress Go coffee makers; and it can be used with metal and paper filters, together or separately, for maximum brew versatility. The barista-worthy coffee that consumers have long praised AeroPress for, can now be made with even more precision and consistency at home and anywhere its travel-friendly design takes them. I am a long time user of the Fellow Prismo, I probably make 60% of my cups using Onyx's 2 minute immersion recipe. I would describe myself as an insufferable coffee snob, and since I began roasting my own beans last year, I've developed a pretty sensitive palate due to all the practice with cupping.Does the Prismo nozzle generate more pressure than the Flow Control and that's why it doesn't clog? I don't know and don't care - you're not going to make true espresso in the Aeropress anyway (the closest you can get is the Joepresso and it's a PITA) so better off to go with what's easiest to use.