Cold brew ratio calculator
Recipes we checked run from 1:9 to 1:13.3. Lower numbers are concentrates. Higher ones are ready to drink.
23.7 fl oz of water
Mugs
Timing from Blue Bottle Coffee, Cold Brew Bottle Guide. Recipe
Who uses what
- 1:9Starbucks at-home concentrate20 g per 180 g, 12–24 hours, then cut 1:1 with water
- 1:11Blue Bottle via HARIO USA68 g to 750 g, up to 18 hours
- 1:12.7Blue Bottle brew guide55 g to 700 mL, 8 hours
- 1:13.3James Hoffmann's cold brew tests75 g per liter, 12 hours, ready to drink
Checked at the source on 2026-10-30. Tap a name to see the source.