What is the difference between washed and wet hulled process?

The difference between the washed and wet-hulled processes is a perfect example of how regional traditions and climates dictate the flavor of coffee. The washed process, also known as 'wet processing,' is the global standard for specialty coffee. It involves depulping the cherries, fermenting the beans in water to remove the mucilage, and then drying the parchment-covered beans. This meticulous process strips away the fruit, leaving the bean to express its own inherent characteristics, which typically results in a clean, vibrant, and acidic cup.

Wet-hulling, or *giling basah* as it is known in Indonesia, is a completely different approach. In this method, the coffee is depulped and partially dried, but the parchment is removed while the beans are still at a high moisture content—often around 30% to 40%. The beans are then dried further without the protection of the parchment. This unique process exposes the green bean to the environment for a longer period, which allows for a different type of fermentation and oxidation to occur.

This difference in processing has a profound impact on the final cup. Wet-hulled coffees are famous for their heavy, syrupy body and their earthy, spicy, and sometimes herbal flavor notes. They are often described as having a 'rustic' or 'wild' quality that is completely different from the clean, fruit-forward profile of a washed coffee. While some might find these flavors challenging, they are highly prized by those who enjoy a bold, intense, and deeply satisfying cup of coffee.

In practice, the choice between washed and wet-hulled is often a matter of necessity. In the humid, rainy climates of Indonesia, it is often impossible to dry coffee in the parchment for long periods without it spoiling. Wet-hulling allows farmers to process their coffee quickly and efficiently, even in the face of challenging weather. For the reader, this means that the next time you see an Indonesian coffee, you can expect a unique, full-bodied experience that is a direct result of this ancient and ingenious processing method. It is a reminder that coffee is not just a product of the bean, but also a product of the land and the traditions that shape it.