How to Dial In an Espresso Grinder

Change one main variable at a time

Start with a repeatable dose and a target beverage yield. If the shot runs much faster than expected, make the grind finer. If it runs much slower, make it coarser. Then taste before changing anything else.

A practical sequence

• Warm the machine and portafilter according to the manual.
• Use a consistent coffee dose.
• Distribute and tamp in the same way.
• Measure the espresso output by mass.
• Record time and taste.
• Make one small grind change and repeat.

Taste still decides

Time is a diagnostic clue, not the final goal. A shot can land in a familiar time range and still taste hollow, harsh or unbalanced. Bean age, basket size, water, temperature and puck preparation also matter.