Cold brew — the less acidic and more slowly steeped sibling of iced coffee — has become widely popular over the past few years. Many coffee chains, including Starbucks and even Dunkin' Donuts, have started serving their own cold brew, even going so far as to inject the brew with nitrogen for an extra kick.
Behind every $3-4 cup, there's a long process that usually involves soaking grounds in lukewarm or cold water for 10 to 16 hours. That brewing process can be done by placing a nut bag in a pitcher or using a big toddy system, but neither of those are particularly portable.
If you're looking for a cold brew maker that you can keep in an office kitchen or shared fridge (without feeling obstructive), a newly released brewing device called the Dripo takes up the same space as a tall Thermos.
The three-part cold brew coffee maker was released in July, and measures around 16 inches tall. It costs a reasonable $29.95 on Amazon. Here's how it works.
Instead of submerging the grounds in water as most cold brew kits do, the Dripo works by slowly dripping water on top of the grounds. This saturates the grounds so the coffee drains drop by drop into the cup below. It's a technique that's been used for a while, though rarely on such a small scale.
The Dripo comes in three parts. You fill the reservoir on top with lukewarm or cold water. Coffee grounds go in the middle chamber, which holds a stainless steel filter, and the mug on the bottom catches the brewed coffee.
The Dripo's coffee chamber has markings to help you measure the right amount of grounds. Dripo recommends using 30 grams.
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