The Ultimate Coffee Glossary

Wet Process

In Coffee, what is the Wet Process?

In coffee processing, wet process (or washed process) uses water to remove defects and transform coffee fruit into green beans. The wet mill is where coffee is pulped, floated, fermented, washed and dried. Wet process often results in a cleaner flavour with lighter body. The coffee seed is not fermented, but rather the fruit mucilage layer is broken down by peptic enzymes. There are different variations of wet process, such as submerged wet fermentation or water-less dry fermentation, used in different countries. After wet processing, the green coffee is rested and then milled at the dry mill into the green bean. Wet process coffees are also known as fully washed.
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