Topic Hub
Coffee Processing
Processing is the method by which the coffee cherry's fruit and skin are removed to reveal the green bean inside. The choice of processing method has as much impact on flavor as origin or variety.
Overview
After coffee cherries are harvested, they must be processed to remove the fruit and dry the seed to a stable moisture level. The three primary processing methods are washed (wet), natural (dry), and honey (semi-washed).
Washed processing removes all fruit before drying, producing clean, bright coffees with pronounced acidity. Natural processing dries the cherry intact, creating fruity, complex, and sometimes fermented flavors. Honey processing removes the skin but leaves some mucilage, balancing clarity with body and sweetness.
Experimental methods like anaerobic fermentation, carbonic maceration, and yeast inoculation are pushing the boundaries of what coffee can taste like. These methods borrow from winemaking to create entirely new flavor profiles.
Start Here
New to coffee processing? Begin with these resources.
From The Complete World of Coffee
- Chapter 4: Processing Methods
- Chapter 5: Fermentation Science
Explore Further
Ready to go deeper? These resources cover advanced topics.
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Curated by
Keith E. Lyons
Specialty coffee author, educator, and founder of Lyons Den Publishing. Author of The Complete World of Coffee, a 600-page guide to coffee origins, brewing science, and sensory education.
Learn more about Keith E. Lyons →