Brew Ratio

Brew ratio is the relationship between the weight of dry ground coffee used (dose) and the weight of liquid espresso produced (yield), expressed as a simple ratio. For espresso, the standard starting point is 1:2 — for every gram of coffee in, two grams of espresso come out. An 18-gram dose at a 1:2 ratio produces a 36-gram yield.

The brew ratio directly controls the concentration and flavor balance of the shot. Lower ratios (1:1 to 1:1.5, ristretto range) produce concentrated, syrupy shots with heavy body, pronounced sweetness, and muted acidity. Higher ratios (1:2.5 to 1:3, lungo range) produce lighter, more voluminous shots with increased acidity, thinner body, and more complexity in the flavor profile.

Different coffees often taste best at different ratios. Light roasts with bright, complex flavor profiles frequently shine at longer ratios that allow more of their nuanced acids and aromatics to develop. Dark roasts, which carry more roast-derived sweetness and body, often taste best at shorter ratios that preserve intensity and avoid the thin, ashy flavors that can emerge at longer extractions.

For brewing methods other than espresso, the brew ratio is expressed differently — pour-over and drip recipes typically use ratios of 1:15 to 1:17 (coffee to water), while French press uses approximately 1:15. These higher ratios reflect the longer contact times and lower pressures of gravity-fed methods. Regardless of method, the brew ratio is the starting point for any recipe and the primary tool for adjusting flavor concentration.