Why single dose
Fresh beans, less stale hopper coffee, and easier light-roast espresso. The tradeoff is speed when guests arrive.
Retention checks
We weigh in/out after purge. Anything above a few tenths of a gram gets flagged in the grinder review.
When to keep a hopper
High-volume mornings and dark roast drip still love a hopper. Match the tool to the drink.