What is the difference between washed and wet-processed coffee?

If you have ever been confused by coffee terminology, you are not alone. "Washed process" and "wet process" describe the exact same post-harvest practice. The nomenclature simply depends on which region or industry veteran you are speaking with. Regardless of the label, the goal of this method remains constant: to produce a "clean cup" that allows the unique terroir of the coffee-growing region to shine without the influence of fermented fruit skin.

The process begins immediately after harvest. The coffee cherries are fed into a depulper, which mechanically strips away the outer skin. The remaining seeds, still coated in a sticky layer of mucilage, are submerged in water tanks. During this fermentation stage, natural enzymes break down the mucilage, which is then washed away with fresh water. Finally, the seeds are dried on patios or raised beds until they reach a stable moisture level.

Because this method requires significant water and infrastructure, it is a hallmark of specialty coffee production in regions like Colombia, Kenya, and parts of Central America. By removing the fruit before drying, producers minimize the risk of over-fermentation, resulting in a brew that is typically perceived as having higher acidity and clarity. If you enjoy a morning cup that tastes crisp and bright, you are likely drinking a wet-processed coffee.

In practice, knowing that these terms are identical helps you navigate specialty coffee menus with confidence. Whether you see "wet-processed" on a technical spec sheet or "washed" on a retail bag, you can expect a cup that emphasizes the coffee's origin rather than the process itself. It remains the gold standard for comparing the quality of different coffee lots side-by-side.