The Coffee Index
Learn coffee, properly.
A working buyer's map of the category — origins, roasts, processing, caffeine, and brew method. Independent, cited, updated as the field moves.
Coffee Science
More in BuzzThe coffee caffeine guide
How much caffeine is in a shot, a pour-over, a French press, or a cold brew — and what actually drives the number.
High-caffeine coffee
Species, roast, dose, and brew method — the real hierarchy behind caffeine per cup.
Mold-free coffee
What the claim actually covers, how testing works, and the lot-sampling problem behind every 'toxin-free' label.
Coffee Buying
See brew guidesBest coffee — a practical framework
There is no universal 'best.' Here's the fit-based framework we use to match a coffee to a drinker.
Organic coffee
What USDA Organic actually certifies, how handler certification works, and where the label breaks in coffee.
Coffee roast levels, explained
Which roast level fits which method, and how to read a roast date on the bag.