Unroasted - Sumatra Mandheling GR1 (Coffee of the Week)

About the bean

Sourced from the volcanic highlands of Simalungun and Karo—the heart of Sumatran coffee—this Mandheling GR1 lot reflects ancestral agroforestry traditions, where Batak families cultivate small plots in harmony with rainforest ecosystems. United under the Karo Community Cooperative, these smallholder farmers combine generational knowledge with innovative techniques, pooling resources to enhance quality while preserving Sumatra’s signature “weird-wonderfulness” through sustainable, community-driven practices.

Expect a delightful butter-vanilla flavour profile at a lighter roast profile (City). Smooth and sweet, the Sumatran’s density is very present alongside a pleasant medium acidity. A Full City roast offers a smoky and dense profile by contrast, with many of the sweet and acidic notes moving to the background. Our sample brewed as both an Americano and V60 preparation produced an intense cup with a heavy body and creamy texture—great for those of you who prefer lighter roasts without excessive acidity.

TASTING NOTES

Fruity. Orange Citrus. Gentle Herbal Earthiness. Long Clean Smoky Finish.

QUICK NOTES

REGION: Simalungun, Karo
FARMS: Simalungun & Karo Community Coop
PROCESS: Semi-Washed, Wet-Hulled (aka Giling Basah)
DRYING: Sun-dried on patio
ALTITUDE: 1,200 - 1,300 masl.
VARIETAL: Ateng (Sigarar Utang)
GRADE: 1
ROAST RECOMMENDATION: Light to Medium. For an explanation of our different roasts, see here: https://greenbeanery.ca/pages/roasting-chart.

Beyond the Bean

Sumatra’s Giling Basah wet-hulling method delivers an iconic flavour profile: spicy, earthy, bold bodied, and less acidic than most (which also results in a peculiar, albeit legendary porous blue-green appearance for raw beans). The country’s regional distinctions add layers of complexity, with the classic Mandheling serving up a rich chocolate-spice character.