Single-dose espresso grinders — weigh in, grind, brew. No hopper, no stale beans, no retention games.
Single-dose suits home baristas who switch between beans, want freshness on every shot, and don't need the speed of a hopper-fed grinder. The trade-off is workflow (you weigh each dose), but the freshness pay-off is real.
Look for low retention (under 0.2g), stepless or finely-stepped adjustment, and 64mm+ flat or conical burrs for proper espresso particle distribution.