The Dose / Yield / Time Triangle
Good espresso isn't mysticism and it isn't a $5,000 machine. It's three numbers, a scale, and the discipline to change one variable at a time.
The Three Corners of Every Shot
Every shot you will ever pull, on any machine, is governed by these three.
1. The Dose
Grams of dry coffee into the basket. This is the corner you lock down first — pick a number that fits your basket and stop touching it.
- Weigh it: A 0.1g scale under the portafilter, every single shot. Eyeballing a dose makes every other variable unreadable.
- Typical: 16-18g in a standard double basket. Match the dose to the basket, not to wishful thinking.
2. The Yield
Grams of espresso in the cup, expressed as a ratio against the dose. The ratio is the strongest lever you have on how the shot tastes.
- 1:2 ratio: The modern standard — 18g in, 36g out. Start here.
- Shorter (1:1.5): Heavier, more intense, less margin for error.
- Longer (1:2.5-3): Opens up light roasts; brighter and more transparent.
3. The Time
How long the shot takes from pump-on to target yield. Time is the diagnostic, not the goal — you don't chase 30 seconds, you read it.
- Fast and sour? Grind finer. The water ran through before it could extract.
- Slow and bitter? Grind coarser. You over-extracted the puck.
Don't Forget the Grinder
The triangle only works if the grinder can move grind size in small, repeatable steps. That's why the grinder matters more than the machine — it's the instrument that actually plays the three corners. Budget accordingly.
See the Espresso Bar Blueprints →