How to Use an Espresso Scale: Dose, Yield, Ratio, and Shot Time
An espresso scale turns vague adjustments into measurable recipes. Four numbers—dose, yield, ratio, and time—make it possible to repeat a good shot and diagnose a bad one.
Measure dry dose
Weigh the empty portafilter or dosing cup, tare the scale, and add coffee. Use a dose that fits the basket rather than forcing every coffee to the same weight.
Measure beverage yield
Place the cup and scale beneath the group, tare again, and stop the shot at a target amount. Weight is more reliable than cup volume.
Calculate brew ratio
Divide brewed coffee weight by dry coffee weight. An 18-gram dose producing 36 grams is a 1:2 ratio.
Track time consistently
Start the timer at pump activation or first drip, but use the same convention every time. Pre-infusion should be noted because it changes total contact time.
Basic workflow
- Warm the machine and portafilter.
- Weigh and prepare the dose.
- Tare the cup on the scale.
- Start brewing and timing.
- Stop at the target yield.
- Record time and taste.
How to adjust
If the shot reaches yield too quickly and tastes sour, grind finer. If it moves too slowly and tastes dry, grind coarser. Once desired flow rate is reached, refine dose amount by taste.
Choosing a scale
The scale must fit between the drip tray and cup, respond quickly, and tolerate occasional splashes. The Turin Mini Espresso Scale is sized for espresso-machine use and helps track yield and time without occupying excessive tray space.
Bottom line
A scale does not make espresso complicated; it removes guesswork. Record the recipe, change one variable, and use taste to decide whether the number should change.
