What you should be able to do
- Describe the espresso recipe using dose, yield and time.
- Prepare an even coffee bed and reduce channeling risk.
- Read flow and taste together.
- Apply a repeatable shot routine.
Espresso is a controlled extraction
An espresso recipe is more useful when written as dose in, beverage yield out, approximate time, temperature and any relevant pressure/flow setting. Ratio communicates structure; time is a diagnostic signal rather than the only quality target.
Dose and basket fit
Use a dose appropriate to the basket and coffee. A dose that is too high or too low can affect headspace and flow. Keep the basket dry and clean before grinding.
Distribution and tamping
Uneven density encourages water to find easier paths. Use a repeatable distribution method and level tamp. The goal is not maximum tamp force but consistent puck preparation.
Yield is a powerful control
A shorter beverage yield can increase concentration and body, while a longer yield can increase extraction and reduce concentration. The best ratio depends on coffee, roast, grinder, basket and sensory target.
Read the shot
Watch for unusually fast or slow flow, early blonding, spraying, uneven streams or sudden changes. Then taste. Visual cues suggest where to investigate but do not replace sensory evaluation.
Reset between shots
Purge appropriately, keep the portafilter and basket clean, wipe the group area according to the machine SOP, and avoid letting spent coffee residue accumulate. Consistency depends on station condition.
Apply the lesson
Write your house espresso recipe in a five-field format: dose, yield, time window, temperature, sensory target. Pull three shots and log deviation from the target.
Open Coffee Lab ↗Test your understanding
Pass at 70% or higher, then mark the module complete. You can retry as many times as needed.
Progress is stored locally in this browser. Completing a module does not issue a formal certification.