Summertime used to be a bust for coffee — then the world met cold brew.
Believe it or not, “cold brew” refers to the process of creating the coffee drink, not its temperature. Technically, it can be served hot or iced, though cold seems to be the preference. To make the drink, coarsely ground coffee is steeped in water for 12 to 24 hours. This heat-free process mutes the drink’s perceived acidity and results in a profile that is smoother and sweeter than a traditional coffee. It also extracts more caffeine, creating a comparably stronger drink.