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February 28, 2018
The cold brew method is an extraction using cold water, introduced immediately--or, in the case of 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.
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.
Using a French Press, mason jar or other container, you’ll begin with preparing the coffee. 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.
Grind the beans on a coarse setting suitable for drip or French Press (think sea salt).
Put your grounds in a container. French presses or mason jars can make things very easy later on when it comes time to filter the coffee.
Add the measured water and mix until all the grounds are saturated.
Let the mixture sit at room temperature overnight or for about 12 hours.
Once the grounds are through steeping, transfer the cold brew concentrate from your French press, mason jar or other container into a fresh container. With the French press, just depress the plunger and pour. For a mason jar or any other container you can use a cheesecloth to filter out the grounds.
From here, you can cut the coffee with water as you like. It’s as simple as that. By contrast, 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 clean up.
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