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The cold brew method is an extraction using cold water, introduced immediately--or, in the case of brewers like the Hario Cold Process Water Dripper Tower with a slow drip over time. The resulting coffee is impeccably smooth with vastly reduced acidity, and a taste that’s sweet or even syrupy.
The Hario Dripper allows you to brew 26oz. (or 2-6 cups) of coffee in as little as five hours. Rather than immersing the grounds immediately, a valve controls the flow of water and the extraction rate. This setup allows you to step up your cold brew game with its ease of use, speed, and easy cleanup.
In general, iced coffee is double-strength coffee brewed hot, which is placed in the refrigerator to cool. Instead, the cold brew process takes all the great flavors from the grounds and leaves behind all of the undesirable compounds that would make your drink bitter or sour. The only ingredients are coarse coffee grounds, water, a refrigerator, and about 12 hours of time.
The ratio here is half a pound of coffee grounds to a gallon of water, which you can scale as needed. This will produce a coffee concentrate which you’ll want to cut with a 1:1 ratio of cold brew to water after the brewing process is complete.
Tip: For an extra flavorful drink, brew some coffee, let cool. Use the coffee to fill an ice tray and freeze it. Use the coffee cubes in your drink instead of regular ice.
Cold brew is becoming an increasingly popular beverage, especially for the Spring and Summer, so don’t be surprised once you know this recipe like the back of your hand, and your friends and family start asking you to make batches for them to take home. Happy Brewing!