Lowest retention grinders

47 models match lowest retention grinders in the Brew & Rate catalogue.

By brand, 8 are from 1Zpresso, 6 are from Timemore, 4 are from Comandante and 3 are from Knock.

By burr, 30 use conical burrs and 17 use flat burrs.

By form factor, 26 are hand portable and 21 are electric countertop.

Median burr size is 48 mm, from 38 mm (Mini) to 83 mm (DF83 V2).

Median retention is 0.1 g, from 0 g (Mini) to 0.3 g (Exagrind).

The lowest retention here is 0 g, for the Mini.

45 of the 47 have single-dosing.

4 of the 47 have grind-by-weight.

By adjustment, 25 are stepless and 22 are stepped.

Median hopper capacity is 0 g, from 0 g (Mignon Zero) to 300 g (X54 Allround).

By origin, 15 are built in China, 12 are built in Taiwan and 8 are built in Germany.

Prices run from €75 to €2,800, with a median of €250.

The 1Zpresso Q2 S is the most affordable at €75; the Weber EG-1 tops the range at €2,800.