Processing method

Carbonic Maceration

Carbonic maceration adapts a carbon-dioxide-rich fermentation technique from winemaking to coffee. Producers hold coffee cherries in a vessel supplied with CO₂; fruit condition, oxygen availability, pressure, temperature, duration and subsequent drying or washing vary by lot. A 2023 study on Yellow found that fermentation duration influenced physical and sensory outcomes, including trade-offs at longer durations. That experiment cannot establish one universal flavor profile or verify the exact gas, microorganisms, additives or pressure used for unrelated coffees. Ask for a documented producer protocol.

TagsCarbonic Maceration

Illustrative flavor tendencies, not a lot-specific claim

Fruit-like or wine-like notes may occur, but carbonation, precise acidity and cup quality cannot be inferred from the label.

In the glossary

Coffee 101: Carbonic Maceration →

Compare processing labels

Carbonic maceration refers to a carbon-dioxide-enriched vessel protocol. Anaerobic identifies an oxygen-restricted fermentation environment but does not by itself confirm that CO₂ was deliberately introduced.

Compare anaerobic fermentation →

What this processing label does not prove

The method name alone does not establish ingredients, fermentation time, microorganisms, drying conditions, farm identity or cup quality. Ask for a documented producer or roaster protocol before treating those details as facts.

These references support the general method description, not a particular producer’s undocumented recipe or cup score.