Yield

Yield is the weight of liquid espresso that flows from the portafilter into the cup during extraction. It is measured in grams using a scale placed under the cup, and it works in tandem with dose and extraction time to define a complete espresso recipe. A standard double espresso yield is typically 36 to 40 grams, though specialty recipes may call for anything from 25 to 50 grams depending on the desired ratio and flavor profile.

Yield is the output half of the brew ratio equation: a 1:2 ratio means 18 grams of coffee in (dose) to 36 grams of liquid out (yield). Shorter yields (lower ratios like 1:1.5) produce ristretto-style shots that are more concentrated, heavier-bodied, and sweeter but may lack clarity. Longer yields (higher ratios like 1:2.5 or 1:3) produce lungo-style shots with more volume, more acidity, and lighter body.

Measuring yield by weight rather than volume is essential because crema — the foam layer on espresso — adds significant volume but very little mass. A shot that looks like 2 ounces in the cup may weigh anywhere from 25 to 45 grams depending on crema quantity. Weight gives a consistent, repeatable measurement that volume cannot.

Stopping the shot at the right yield is a skill that requires attention. On manual machines, the barista watches the scale and stops the pump when the target weight is reached. Volumetric machines can be programmed to stop automatically at a set volume, though weight-based endpoints are more accurate. Some modern machines now include gravimetric systems with built-in scales that stop the shot at a target weight automatically.