About This Coffee
Pak Irham purchased his Atu Lintang farm in 1992. At the time, the region wasn’t a major coffee growing region, but overtime it’s developed into a well-known coffee hub. This change was due in part to the arrival of migrants from Java, who planted coffee throughout the valley. Today, the farm is now nearly 50 hectares and is run by Pak Sungkono.
Harvest & Post-Harvest
Cherry is selectively handpicked and delivered to Jagong mill for processing. At the mill, coffee is processed using Indonesia’s unique wet hulling process (giling basah).
The basic process for wet hulling is as follows: Cherry is harvested and pulped. The coffee is fermented overnight and washed with clean water the following morning. Parchment is sun-dried for between half a day and two days, depending on the weather, to allow for skin drying which eases the removal of parchment.
At this juncture the moisture content is between 30-40% and parchment is processed for wet hulling. A wet hulling machine is larger, requires more power, and runs at a faster speed than a traditional dry huller. After the hulling, the coffee seed is whitish and pliable and is called labu. It is laid out to dry on tarps or patios, where it reduces in size and moisture to 14-15%. This stage the green coffee is known as asalan - unsorted and with defects. Much of the internal commercial trade is for asalan. Exporters, most of whom are based in Medan, will finish the drying down to 12-13%, sort and prepare for shipment.
Coffee in Indonesia
Indonesia has a long coffee producing history, but recently their coffees have been overlooked by the specialty market. Thanks to our innovative and ever-expanding supply chain, we are proud to bring you high-quality coffees from many of Indonesia’s unique regions, accompanied by in-depth traceability information.
Indonesia is perhaps best known for its unique wet hulling process (giling basah). Though its exact origins are unclear, wet hulling most likely originated in Aceh during the late 1970s.
Wet hulling’s popularity can be attributed to producers’ need for prompt payments. It was also adopted specifically by many producers who lacked the drying infrastructure that was needed to shelter drying parchment from the high humidity and inconsistent rainfall typical in Sumatra. At higher elevations with constant humidity and unpredictable rainfall, drying can prove to be slow, risky and difficult.