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Cold Brewing Coffee
Like the opinions on which variety of coffee is best, the recipes you will find for making cold brewed coffee are just as varied, but here is the simple method that works for me:
1. Measure out 1.5 cups/355 mL (approximately 4.25 oz. by weight or 120 grams) of the whole bean coffee of your choice and give it a coarse grind (if you grind it too fine, you’ll have trouble filtering it out later).
2. In a 1-quart or 1-liter jar, add your coffee, and then fill the jar with good tasting, chlorine-free, room-temperature water. I recommend boiling the water ahead of time and allowing it to cool as this sanitizes it, removing anything that can later damage the beer.
3. Now cover your jar, give it a good shake to make sure the coffee and water are well incorporated. Let it
sit at room temperature for 24 to
48 hours.
4. Once step 3 is completed, it’s time to filter the grounds out of the cold brew coffee concentrate. The easiest way to do this is to first give it a bulk filter with a mesh kitchen sieve or strainer, and then give the resulting liquid a second fine filter by passing it through a paper coffee filter (a funnel lined with a paper towel or fine cheese cloth will work in a pinch). Strainers and filters can easily be sanitized by a dip in boiling water.
Filtering may take some time, but don’t rush it, your patience will be rewarded. This process will leave you with approximately 3 cups (0.75 L) of deep, dark, intensely flavored, almost syrup-like coffee concentrate that can then be diluted to taste with hot water or steamed milk for hot coffee, or cold water or cold milk for iced coffee . . . or, of course, added to your favorite batch of homebrew!