Espresso grind size

Espresso grind size on a Hario Mini Mill Plus

For Espresso on a Hario Mini Mill Plus, start at 2 clicks. That is about 250 µm, an extra fine grind.

Hario Mini Mill Plus setting for Espresso2 clicksExtra fine grind, ~250 µm

Finer 2 clicksCoarser 2 clicksStep size 63.2 µm

Adjusting from 2 clicks

When	Setting	Particle size
Finer: sour or thin cups	2 clicks	~233 µm
Start here	2 clicks	~250 µm
Coarser: bitter or dry cups	2 clicks	~293 µm

Lower numbers are finer. To grind finer, turn the setting down. Change one step at a time, and brew again before changing anything else.

Starting recipe for Espresso

Dose18 g
Water36 g of espresso out
Ratio1:2
Time25 to 30 seconds
Water temperature92 to 96 °C

Steps

Weigh 18 g of coffee and grind it.
Distribute and tamp level, then lock in the portafilter.
Start the shot and the timer together, with the cup on a scale.
Stop at about 36 g in the cup, around 25 to 30 seconds.
Taste. Sour or thin: grind finer. Bitter or dry: grind coarser.

Other brew methods on a Hario Mini Mill Plus

Espresso on other grinders

Questions

What grind setting is best for Espresso on a Hario Mini Mill Plus?

Start at 2 clicks and adjust by taste. Lower numbers are finer. To grind finer, turn the setting down.

How do I know if I should grind finer or coarser?

Shots run fast and taste sour: grind finer, or raise the dose a little. Shots run slow and taste bitter: grind coarser.

Where does this setting come from?

The Hario Mini Mill Plus is mapped to particle size in microns, fitted from the Honest Coffee Guide's settings for this grinder. It is a starting point, not a guarantee.