Anyone who has spent time browsing the shelves of a specialty coffee shop has likely noticed a few recurring words on the bags. Alongside notes of "stone fruit" or "milk chocolate," labels almost always proudly display the processing method, most commonly, Washed or Natural.
But what do these terms actually mean, and why do they matter to the everyday coffee drinker?
As it turns out, how a coffee cherry is handled after it is picked is one of the major factors in how the final cup tastes. With regular new coffee arrivals at the Dear Green roastery, there's no time like the present to explore the differences in the two most popular styles of coffee processing: Washed vs. Natural.
Coffee Processing
At its core, coffee processing is the journey of turning a fresh agricultural fruit (the coffee cherry) into the green coffee beans ready for roasting. It is the meticulous process of removing the outer skin, pulp, and sticky mucilage to get to the seed inside - what we know to be the raw green coffee bean.
Historically, a farmer’s choice of processing method was driven by tradition and pure practicality. Decisions relied heavily on access to an abundance of clean water, or whether local weather conditions were humid or arid.
Today, while those practicalities still exist, processing is also driven by market demand and ongoing innovation. Specialty coffee producers are constantly pushing boundaries, borrowing fermentation techniques from the wine and beer industries, and even experimenting with "co-fermentation" (adding fruit or yeasts during processing) to unlock entirely new flavor possibilities.
But before diving into wild experiments, it helps to master the two foundational pillars of coffee processing.
The Washed Process: Clean, Crisp, and Complex
Also known as the "wet process," the Washed method focuses entirely on the intrinsic flavor of the coffee bean itself, without the heavy influence of the surrounding fruit.
How it works:
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Depulping: Shortly after harvest, the coffee cherries are put through a machine called a depulper to strip away the outer skin and fruit flesh.
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Fermentation: The beans, still coated in a sticky layer of sugar called mucilage, are placed in water tanks to ferment. This breaks down the remaining sugars.
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Washing & Drying: Once fermentation is complete, the beans are thoroughly washed with clean water and spread out on raised beds or concrete patios to dry under the sun.
The Flavor Profile:
Because the fruit is removed so early, washed coffees offer a remarkably "clean" taste. They are celebrated for their clarity of flavour, bright acidity, and complex, delicate notes. Coffee lovers who enjoy a vibrant, floral cup with a light, tea-like body will naturally gravitate toward washed coffees.
The Natural Process: Bold, Fruity, and Sweet
The Natural process (or "dry process") is the oldest method of processing coffee. It is a beautiful, traditional practice that embraces the full fruit. From a smallholder farmer's perspective, it requires minimum investment (pulper, water, tanks), preserves the cherry and makes it lighter to transport.
How it works:
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Drying Intact: Instead of removing the fruit, the entire, intact coffee cherry is spread out directly onto drying beds.
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Fruit Infusion: As the cherry dries in the sun over several weeks, the seed inside naturally absorbs the sugars and intense fruit flavors of the surrounding pulp.
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Milling: Only after the cherry is completely dried and resembles a raisin is the dried outer husk mechanically removed.
The Producer’s Challenge: Natural processing sounds simple, but it requires meticulous, labor-intensive care. Producers must constantly rake and turn the cherries to ensure they dry evenly. Failure to do so can result in over-fermentation, leading to unpleasant, moldy, or defective flavors.
The Flavor Profile:
Natural coffees are undeniable flavour bombs. They are famously fruit-forward, boasting tasting notes that often mimic berries, tropical fruits, or wine. They typically feature a heavier mouthfeel, lower acidity, and a bold, syrupy body.
Washed vs. Natural: Which is Better?
The short answer is simple: neither, as flavour is entirely subjective. Those who prefer a clean, bright, and elegant cup will likely gravitate toward washed coffees. Those who love big, sweet, fruity flavors and a rich body will find that naturals win every time.
The joy of specialty coffee is that a permanent favorite doesn't have to be chosen. Both processes can be appreciated for their distinctive style.
Ready to test the palate? Picking up a bag of the new Timor-Leste Washed and Natural coffees to brew side-by-side is the perfect way to discover which process truly stands out.
Photos were taken by Wes Kingston on our 2026 trip to Uganda and Rwanda, hosted by Omwani and Agri Evolve.
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