Dumerso is a private washing station located just north of the town of Yirga Chefe, in the heart of the coveted Gedeo Zone—the narrow section of highland plateau dense with savvy farmers and fiercely competitive processors whose coffee is known the world over as “Yirgacheffe”. The Gedeo region is named after the Gedeo people who are indigenous to this area. As a coffee terroir, Yirgacheffe has for decades been considered a benchmark for beauty and complexity in arabica coffee—known for being beguilingly ornate and jasmine-like when fully washed, and seductively punchy and sweet when sundried--and hardly requires an introduction.