Fermented

As a defect flavor, a fruit quality in a coffee that is excessively ripe, toward rotten. Fermented flavor can be the result of poor wet-processing, over-ripe cherry, or some other contamination in the processing. As a processing step, all wet-process coffee is fermented to break down the mucilage. Coffee is fermented for 12-24 hours, sometimes longer, so the mucilage can be washed off the parchment layer.

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