How to Brew Espresso

Grind size

Nine bars of pressure through a compacted puck in 25–30 seconds needs a fine, slightly clumping grind — table salt heading toward powder. It's the tightest target on the chart, where a click or two swings a shot from sour to bitter. Under 20 seconds, go finer; choking past 35, go coarser.

200–300 µm · Fine