Cold Brew Ratio Calculator
Works out a cold brew batch, whether you make it as a concentrate or ready to drink.
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The formula
coffee = water ÷ ratio brew = water − 2 × coffee drink = brew × (1 + parts added)
Grounds hold on to about twice their weight in water, which is why a concentrate yields noticeably less than you put in.
What to watch out for
Use a coarse grind, roughly as for a French press, and strain through a filter for a clean cup. Strength is largely set by the ratio and the steeping time, so adjust one of them at a time.
Frequently Asked Questions
How much coffee for a litre of cold brew?
About 200 g for a 1:5 concentrate, which yields about 600 ml. Ready to drink at 1:12, about 83 g.
How much do I dilute cold brew concentrate?
Commonly one part concentrate to one part water or milk. Start there and adjust to taste.