Why it matters in the cup.
Coffee glossary
Brewed Weight
How you read the result
What it means
The mass of liquid espresso collected in the cup. Unlike volume, a weight measurement is repeatable and directly useful when setting brew ratios. Ignoring brewed weight makes every correction slower — the barista ends up chasing taste without knowing whether the machine is delivering too little or too much liquid.
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Where this leads
Each one pushes this into the cup, compares it, or helps you act on it.
The numbers that define the shot
Brew Ratios
Measurements matter when they live inside a recipe.
Use ratio and taste together. The number gives structure, but the cup still decides whether the recipe is right.
What people mean when they say "extraction"
Espresso Extraction
Numbers are there to explain taste.
Separate extraction from strength in your thinking. One asks how much was dissolved, the other how concentrated the drink feels.
What people mean when they say "extraction"
Espresso Strength
Not all numbers describe the same thing.
Use the word strength carefully. It describes concentration, not quality.
Why shots taste different
Normale
Use the numbers to define style, not habit.
Define the normale by numbers and taste, not by habit alone.