What Is Cold Brew Coffee? How It's Made, Taste, and Caffeine
Cold brew coffee is made by steeping coarsely ground coffee in cold or room-temperature water for 12–24 hours — no heat, no brewing machine. The result is a smooth, low-acid coffee concentrate that is diluted and served cold. Cold brew is not iced coffee: the two are made completely differently and taste very different. How Cold Brew Is Made The cold brew process has four steps: Coarse grind — Coffee is ground coarsely, similar to French press. Fine grinds over-extract and turn bitter in cold water. Cold water steep — Grounds are submerged in cold or room-temperature water. The standard ratio is 1:8 (1g coffee per 8g water) for regular strength, or 1:4 for concentrate. Long steep — The mixture steeps in the refrigerator (or at room temperature) for 12–24 hours. Cold steeping is slower than hot brewing, which is why it needs much more time. Filter — The grounds are filtered out through a fine mesh strainer, cheesecloth, or paper filter. What remains is smooth cold brew concentrate or ready-to-drink cold brew. There is no heating involved at any stage. This is the defining characteristic that separates cold brew from every other brewing method. ...