Brew Ratio

Brew ratio is the proportion of ground coffee to liquid water, typically expressed as grams of coffee per grams (or millilitres) of water. Espresso standard: 1:2 (18 g coffee to 36 g liquid in 25-30 seconds). Filter coffee SCA Golden Cup: 55 g/litre (approximately 1:15-1:18). Ristretto: 1:1 to 1:1.5. Lungo: 1:3 to 1:4. Ratio is one of the primary extraction variables alongside grind size, water temperature, and contact time. Tracking ratio by weight (using a scale) is essential for reproducible results.