espresso

Espresso brew ratio recipe

A measurable espresso start. Dose and beverage mass define the ratio. Shot time is a diagnostic clue; it is not a quality target to hit while taste and flow are ignored.

Coffee
18 g
Target
36 g
Ratio
1:2
Temperature
93 °C
Grind
espresso-fine
Total
1 min
Run this recipe

Timed steps

  1. 01
    Start the shot

    0:00 · cumulative 0 g

  2. 02
    Watch flow and beverage mass

    0:05 · cumulative 30 g

  3. 03
    Stop near 36 g

    0:25 · cumulative 36 g

Evidence and limits

An SCA survey of current espresso practice reported an average 1:2 ratio, 18–20 g dose, 36.5 g beverage and 25–30 seconds. CupTune uses 18 g, 36 g and 30 seconds as a survey-grounded starting point, not a correctness standard.

What to hold steady

Keep dose, water, temperature, pouring pattern and filter preparation the same while testing one grind change.

What this cannot guarantee

Grinder distribution, roast, water chemistry and equipment geometry change the result. Record the actual brew rather than treating this recipe as a verdict.