Like surprise parties and camping trips, cold brew is a planner’s dream. With a bit of foresight and some basic instructions, the Filtron method is the most reliable and delicious way to achieve a single origin iced coffee at home. Set your stopwatch for a 12-hour countdown and you’ll be generously rewarded—a crystalline, concentrated brew, with plenty of zing, is your prize.
Measure out 2,000 grams (two liters) of water.
Place the Filtron’s rubber cap in the hole at the bottom of the device.