What is espresso ratio?
Quick answer
Espresso is measured by dose in → liquid out, not water poured over grounds. A common starting point: 18 g coffee in → 36 g liquid out in 25–35 seconds — that's a 1:2 yield ratio. Grind fine, tamp level, adjust grind if the shot runs too fast (sour) or too slow (bitter).
Espresso vs moka pot vs AeroPress
| Method | What you get | Ratio style |
|---|---|---|
| Espresso machine | Concentrated shot with crema | 1:2 yield (18 g → 36 g) |
| Moka pot | Strong stovetop coffee | ~1:10 brew ratio |
| AeroPress | Strong filter-style | 1:11 to 1:16 |
No machine yet? Start with moka pot or AeroPress.
Common questions
Why is my shot sour? Grind too coarse or dose too low — finer grind or slightly more coffee.
Why channeling? Uneven tamp or old beans; distribute grounds evenly before tamping.
Is espresso stronger than drip? Per milliliter yes; per full mug of Americano, caffeine depends on how much you dilute.
Use the troubleshooter for taste fixes. This is brewing guidance, not medical advice about caffeine.