What Is Cold Brew? The Complete Definitional Guide to Coffee's Smoothest Drink

Cold brew is the coffee category that confuses more drinkers than any other. It looks like iced coffee in the glass, comes from chains that also sell iced coffee, and even regular customers often can’t articulate what makes the two different. The answer is simple: temperature. Cold brew is coffee that was brewed in cold water. Iced coffee is coffee that was brewed in hot water and then cooled. Everything else — the smoother taste, the higher caffeine, the longer shelf life, the chocolatey-sweet character — flows from that one decision. ...

May 2, 2026 · 23 min · Home Espresso Lab