Technique
Dose, Yield, and Time: The Espresso Ratio Explained
Once you understand dose, yield, and ratio, adjusting a bad shot stops being guesswork and starts being a process with a clear next step.
Set your dose and target ratio first
Pick a dose (commonly 18g for a double shot in many recipes) and a target ratio (a common starting point is around 1:2), which together define your target yield. This is the recipe you are actually trying to hit — everything else is adjusting to reach it consistently.
Use grind to hit your target time at that ratio
If the shot reaches your target yield much faster than expected, your grind is too coarse for that ratio; if it is much slower or chokes, it is too fine. Adjust grind, not dose, to fix timing at a fixed ratio — changing dose to "fix" a timing problem just changes what recipe you're making, it doesn't fix the underlying flow rate issue.
Adjust ratio to taste, once timing is consistent
Once your shot reliably reaches its target yield in a reasonable time, adjust the ratio itself (more yield for a longer, milder shot; less for a shorter, more concentrated one) to match your taste. This is a deliberate, separate step from fixing grind — do it only after grind and timing are already stable.
Why this order matters
Adjusting ratio before timing is stable means you are chasing two moving targets at once — you won't know whether a taste change came from the new ratio or from timing variance that was already there. Fixing timing first, then adjusting ratio, isolates each change so you can actually learn what caused what.