What is espresso yield? Dose, yield and brew ratio explained

What is the difference between dose and yield?

Dose is what goes in, yield is what comes out. Dose is dry ground coffee in the basket. Yield is the liquid espresso in the cup, including the dissolved coffee and the crema.

Recipes write them as a pair, like "18 g in, 36 g out." Divide the yield by the dose and you have the ratio. A 20 g dose with a 40 g yield is also 1:2.

What yield should an espresso have?

There is no single correct number, but 1:2 is a common starting point. Counter Culture targets 36 g from 18 g, in 25 to 35 seconds. Its guide allows a range from 1:1.5 to 1:2.5 depending on taste.

The guide uses yield to fix flavor. If a shot tastes sour, grind finer or extend the ratio, up to 1:2.5. If it tastes bitter, grind coarser or shorten it, as concentrated as 1:1.5.

How do ristretto, normale and lungo differ?

By how much yield you take from the same dose. A shorter yield is more concentrated, and a longer one is more diluted.

Wikipedia's espresso article puts a standard shot at about 25 to 30 ml. It describes a double-dose ristretto as about 30 ml, and a lungo as double to triple the normale volume. These volumes are traditional guides. Most specialty recipes now set the ratio by weight.

Is yield the same as extraction yield?

No, and the shared word causes confusion. Shot yield is a weight in grams. Extraction yield is a percentage: how much of the dry coffee dissolved into the drink.

Wikipedia's coffee extraction article says espresso extraction yield is generally 15 to 25%. It notes that espresso has had far less study than brewed coffee. For most traditional brewed coffee, the same article calls 18 to 22% desirable. See extraction for what that percentage means for taste.

Why weigh yield instead of timing the shot?

Because weight tells you what you actually got. Two shots can run for the same time and still land at different yields. Counter Culture's recipe pairs a target weight, 36 g, with a time window to check it against.

Volume is harder to read because crema sits on top as foam. A small scale under the cup removes that guesswork.

How does grind size affect yield?

Grind sets how fast the yield arrives. Finer grounds resist water more, so the shot reaches its target weight more slowly. Coarser grounds let it flow faster.

Counter Culture's guide uses this as its main adjustment. Under 25 seconds to 36 g, grind finer. Over 35 seconds, grind coarser.

That is why espresso asks so much of a grinder. Baratza notes that a few dozen microns of burr movement can shift shot time by several seconds. A grinder with fine adjustment lets you hit your yield in the time you want. Compare espresso-capable grinders in the grinder finder, or work out a dose and yield with the brew calculator.