Cold brew
Cold brew is coffee brewed with cool or room-temperature water over a comparatively long period. It is an immersion method rather than a single standard recipe.
How it works
Ground coffee is steeped in water for many hours. The coffee is then separated from the grounds using a filter. Some recipes produce a ready-to-drink beverage; others produce a concentrated liquid that is diluted.
Recipe variables
Coffee-to-water ratio, grind size, temperature, contact time and filtration all influence the final drink. Because recipes vary widely, there is no single universal cold-brew ratio.
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Accuracy note: Coffee terminology and recommended brewing parameters can vary by producer, roaster, equipment and recipe. Where a term is not universally standardised, this site says so rather than presenting one convention as a rule.