Mubuku Anaerobic 72 Hour Natural Beyond Flagship

The Mubuku Washing Station is located on a 20-acre plot along the banks of the Mubuku River in Kasese District. The river originates from the glacial caps of the Upper Rwenzori Mountains and flows all the way to Lake George. Along its journey, it winds through fertile farmland on the east-facing slopes of the Rwenzori Mountain Range, passing Kasese Station before joining Lake George and the broader African Great Lakes system.

Kasese lies close to the shores of Lake George, with the breathtaking Queen Elizabeth National Park to the south of the station. Even closer is the entrance to Rwenzori National Park, just 1 kilometer from our washing station. Both parks are UNESCO World Heritage Sites.

This coffee is part of a specialty initiative born from the partnership between Sucafina NV and Ugacof. The project’s mission is to develop a reliable, high-quality flavor profile that adds value to Ugandan coffee. Anička Marková, Green Coffee Merchant at Sucafina NV, worked closely with Ugacof to design a customized experimental processing method aligned with these goals.

The drier, hotter climate at Mubuku Washing Station, combined with the presence of a quality control lab, provides the ideal environment for experimenting with anaerobic natural processing. This setup ensures even drying and consistent quality at every stage.

Purchases of this lot contribute towards our Beyond Flagship Project in Uganda: Tools for Prosperity. The initiative supports coffee farming families in Uganda by investing in regenerative agriculture and livelihood diversification, key strategies that can contribute to closing the living income gap, one of our IMPACT goal areas.

More than 4,300 farmers contribute cherries to the Mubuku station, spread across a vast network of farms and communities. For those living farther away, transporting cherries daily can be a significant challenge. To address this, we’ve built strong relationships with trusted middlemen who collect and deliver cherries to the station. This network is essential for maintaining a smooth workflow and ensuring timely payments to farmers.

Farmers primarily grow SL14, often intercropping with bananas, vanilla, and beans to diversify their income.

Cherries are transported to the station daily, often via steep, muddy dirt roads. Upon arrival, the cherries are floated and meticulously hand-sorted by trained staff. They are then placed in plastic drums with capacities ranging from 95 to 155 kg. The tanks are sealed and the cherries undergo anaerobic fermentation for 72 hours.

The introduction of a state-of-the-art wet mill will enable the Mubuku Project to consistently produce high-quality specialty grades across all processing methods. It also opens the door to exciting new experiments that unlock the full flavor potential of these coffees, like this anaerobic natural.

For our Anaerobic Naturals, cherry quality and a controlled environment are critical to preventing over-fermentation and maintaining the highest standards. After fermentation, cherries are spread on raised beds with an average capacity of 300 kg. Around 90 seasonal workers are employed at the drying tables, focusing almost exclusively on drying care. They frequently turn and rake the cherries to ensure even drying and visually inspect for defects, removing any damaged beans.

Drying typically takes 18 to 24 days, depending on conditions.

Our partner, UGACOF/Sucafina Uganda is committed to improving quality in Uganda by building new washing stations and infrastructure and training personnel in the region. Collaborations with our FarmerHub program and our sustainability partner, the Kahawatu Foundation, are building upon our work to expand farmers’ access to better resources and better training. Our connections to our more established operations in nearby Rwanda, Burundi and Kenya offer us advice and a perspective steeped in a familiarity with East Africa.

The bulk of our work in Uganda is focused in the West, near the Rwenzori Mountains. The biggest difference between East (Mount Elgon) and West (Rwenzori) is that Mount Elgon is a more established and competitive market. We are excited to be at the forefront of the drive for enhancing coffee production infrastructure, developing the industry and becoming reliable partners for farmers in the Rwenzori Mountain region.

It is clear to us that the potential in this region might exceed our expectations and even the potential of the popular Mount Elgon region. With an ever-growing demand for high quality Arabicas and a sustained interest from roasters and coffee drinkers in the East African origins, we are very confident that, with diligence and effort, Western Ugandan coffees will be able to take their place alongside the other great East African coffees. ​

While the scale of work in regions like this can sometimes be overwhelming, we have a clear plan that steadily increases coffee quality.

Our first step is the one that leads to the most immediate and noticeable improvement: harvesting techniques. Due to a long history of home-processing and a lack of incentive for high quality, harvesting in the region is often semi- or entirely non-selective. Thanks to our extended network of cherry collection sites, we meet with farmers every day during the harvest season and can give real-time feedback that can impact the quality of the next day’s harvest. At the collection sites, we can insist on higher levels of care and reward meticulous picking. Though we’re still in the early years, we have seen a clear difference in quality from one year to another and even from the first week of the harvest to the last.

Future steps will include working with farmers to improve their access to materials and knowledge of better farming practices. This means making fertilizer more accessible, encouraging farmers to plant shade canopies and more. We’re planning on building demonstration plots, input access sites across the region and training a new generation of skilled washing station staff. We know it will take time, but we have a strategy and are committed to realizing this vision.