What is the difference between washed and wet hulled?

The primary difference between washed and wet hulled coffee lies in the timing of the hulling stage and the resulting impact on the bean's environment during drying. In the standard washed process, the coffee cherry is depulped, fermented to remove mucilage, and then dried while still protected by its parchment layer. This slow, controlled drying process protects the bean and allows for the development of bright, clean acidity and nuanced sweetness, which is why it is the global standard for specialty coffee.

Wet hulling, known locally in Indonesia as giling basah, is a specialized technique born from the region's high humidity. In this method, the coffee is depulped and partially dried for a short period, but the parchment is removed while the bean still retains a high moisture content. The naked, moist green beans are then dried further. This exposure of the raw bean to the environment while still wet is what imparts the signature 'Sumatra-esque' profile.

For the coffee drinker, this means a stark contrast in the cup. Washed coffees are prized for their clarity, crispness, and vibrant acidity, often highlighting the specific terroir of the farm. Wet hulled coffees, however, are celebrated for their massive, syrupy body and muted acidity. They offer a rustic, complex experience with deep notes of cedar, tobacco, and earth that are rarely found in other processing methods.

While wet hulling is sometimes confused with semi-washed or honey processes, it is distinct due to the early removal of the parchment. Because the beans are exposed to the elements without their protective shell, they are more susceptible to environmental factors, which contributes to the 'funk' or spicy, herbal characteristics often associated with Indonesian coffee. Understanding this difference helps you choose your brew based on whether you prefer a bright, tea-like clarity or a bold, heavy-bodied experience.