Sumatra
SUMATRA | CV. Kuala Bengi
Aceh Tengah, Takengon
Chocolate | Dried Cherries | Almonds | Honey
Wet Hulled · Coming Soon
Processing
Wet Hulled
Indonesia's distinctive processing method, also called giling basah. Parchment removed while still wet, creating that characteristic earthy, full-bodied Sumatran cup profile.
Definition
What wet hulled means
In wet hulled processing, farmers depulp and briefly ferment the coffee, then sell it to collectors while still in wet parchment (30-40% moisture). The parchment is then removed while wet, and the exposed green bean dries on patios.
This method evolved because Indonesia's high humidity makes slow drying difficult. The result is a distinctive cup: earthy, herbal, mushroomy, with heavy body and low acidity. Love it or hate it--there's nothing else quite like it.
Quick specs
Also called
Giling basah (Indonesian)
Hulling moisture
30-40% (vs 10-12% normal)
Primary origin
Sumatra, Sulawesi
Cup character
Earthy, herbal, heavy body
Bean appearance
Blue-green, irregular
Why Roasters Care
What wet hulled offers (and challenges)
Unique flavor profile
Nothing else tastes like Sumatra. Earthy, mushroomy, herbal, tobacco notes. Polarizing but beloved by many customers.
Espresso blends
Heavy body and low acidity make wet-hulled coffees excellent blend components. Adds weight and complexity.
Dark roast friendly
Low acidity means Sumatran coffee handles darker roasts well. Popular for French roast profiles.
Visual variance
Wet hulling damages the bean surface. Expect irregular shapes and colors. Doesn't affect cup if sourced well.
Quality variation
Decentralized processing means quality varies. Source from importers who quality-control at origin.
Customer expectations
"Sumatra" customers expect that earthy profile. It's a distinct category with loyal following.
Our Approach
How we source Sumatran coffee
Quality-controlled sourcing
We work with established exporters who cup at origin. Not all wet hulled coffee is created equal.
Moisture monitoring
Wet hulled coffee arrives at higher moisture than other origins. We verify it's within safe range.
Proper storage
Climate-controlled storage is essential. Sumatran coffee can develop issues if stored warm or damp.
Cupped on arrival
Every Sumatran lot cupped for defects and profile. "Earthy" shouldn't mean "moldy."
Deep Dive
Wet-Hulled Sumatra: A Buying Guide
What makes Sumatran wet-hulled coffee unique, how to evaluate quality, and key spec-sheet flags for body-forward blends.
Related Terms
More Processing
Natural Process
Dried in cherry. Fruit-forward flavors, higher body.
Washed Process
Pulped and fermented before drying. Clean, bright, terroir-forward.
Decaf
Caffeine removed via water or solvent. Quality depends on process.
Swiss Water Process
Chemical-free decaf using water and carbon filters.
Fermentation
Microbial breakdown of mucilage. Key to flavor development.
Raised Beds
Elevated drying surfaces for airflow. Better quality control.
Looking for Sumatran coffee?
Request samples and taste properly sourced wet hulled coffee.