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Decaf Atlas

Is it OK? · 5 guides · 11 sources

Decaf, explained

How much caffeine is really in a cup, whether the low-caffeine varietals are worth chasing, and how to brew the stuff without inheriting someone else's assumptions. Every claim carries its source.

The processes

Four words cover basically every decaf you will meet in Europe. Each has its own page, with the claims on the bag and how they hold up.

  • A water-only process run at a single plant in British Columbia, using coffee extract already saturated with everything except caffeine. The best known name in decaf, and the most misunderstood — it is a company guarantee, not a certification.

  • Ethyl acetate fermented from sugarcane molasses, used as an extraction solvent in Colombia. The sweetest-cupping process and the one whose marketing is furthest from its chemistry.

  • Caffeine dissolved out under pressure by carbon dioxide above its critical point. The most selective process and the best for body and mouthfeel — and the most expensive to run, which is why you see so little of it.

  • A water process run in Veracruz using glacier-fed watershed water. Mechanically a close cousin of Swiss Water — and the process most often described with a number its own plant does not claim.

The sources

Studies, regulations and supplier documents as entities, so they can be cited from anywhere and corrected once.

All 11 sources →