Buying guides
The best coffee grinders under $300
Burr geometry, retention and step size decide what a grinder is good for. Here is which one to buy for espresso, for filter, and for both.
Grind
The one variable to change first, and alone, before you touch dose, time or temperature.
Buying guides
Articles
Dialling in a new bag
A repeatable routine for the first four shots from a new coffee: what to fix, what to change, and how to know when you are done.
Grind settings by brew method
From espresso to cold brew, what size each method needs and why. How to find a setting on an unmarked grinder, and how to adjust by taste instead of by number.
Why your espresso tastes sour
Sourness is almost always under-extraction, and under-extraction is almost always grind. Here is the order to change things in, and why that order matters.
Grind size, explained properly
Particle distribution, fines, boulders, and why two grinders set to the same number produce different coffee.