Indonesian Sumatra – Wet Hulled – Green Coffee

The Karo Highlands of Sumatra are renowned for producing some of the world’s most unique and sought-after coffees, cultivated by dedicated smallholders who grow Arabica coffee on small plots of fertile, high-altitude land. The region’s cool temperatures (15–25°C), rich volcanic soil, and lush climate provide the perfect conditions for exceptional coffee cultivation.
At the heart of what makes this coffee truly special is its wet-hulled (Giling Basah) processing method, a time-honored technique developed to suit Indonesia’s wet and humid environment.
What is Giling Basah?
The process begins with ripe cherries, which are pulped to remove their outer skin. Unlike conventional methods, Giling Basah then incorporates a shortened fermentation period to loosen the sticky mucilage. The beans are washed and immediately hulled while still wet—removing the parchment layer before the beans are fully dried. This step is unique to Indonesian processing and ensures that the coffee beans dry much faster, making it particularly effective in the region’s high-humidity conditions.
As the beans continue to dry, they take on a distinctive blue-green hue and develop their signature flavor profile. Giling Basah enhances the coffee’s natural earthiness and body, producing a cup with bold, rustic notes of cedar and tobacco, balanced by the sweetness of rich chocolate and subtle hints of spice.
craftsmanship in every lot.
This Karo Highlands coffee is Grade 1 (G1) Triple-Picked (TP), ensuring only the highest-quality beans are selected. Triple-picking involves a meticulous hand-sorting process to remove defects, maintaining exceptional consistency and purity for roasting.
Giling Basah is more than just a processing method—it is a tradition that embodies the resourcefulness and expertise of Indonesian coffee producers. The result is a deeply flavorful and complex coffee that’s as bold as the landscapes of Sumatra itself.

For roasters seeking a coffee that combines unmatched depth, sweetness, and rustic charm, Karo Highlands green coffee is the ultimate choice.