Dega is a regional variety from Ethiopia.
The term "heirloom" is often used as a catch-all for Ethiopian coffees, but in reality there are countless varieties under that term, know as "land races". These races were originally selected from wild coffee trees, and are often hyper-localised, adapted to very the very specific conditions in which they first developed.
In this case, the variety is named after a single tree, called Dega, from which the genetic material was selected. When used as firewood, Dega trees produce a sweet, warm aroma, similar to the smell of coffee being roasted. The Amharic word "dega" means "cool highlands", reflecting the microclimate where Dega coffee flourishes, and alluding to the flavour profile associated with it.
The picture above shows a lot from Chelbesa, the biggest coffee plantation in the Gedeb Woreda, where we work with our partner Girum Assefa.