Uganda produces both Arabica and Robusta coffee. The source discusses growing areas around Mount Elgon, western highlands and the Lake Victoria basin, including the Bugisu name associated with eastern Arabica production. These geographical references should not all be treated as botanical varieties, and an older national percentage is not needed to identify the coffee in a particular bag.
Ask for the species or blend, region, producer and processing method. The source describes Ugandan trade terms associated with washed and naturally processed Arabica, often written Wugar and Drugar. Size grades such as A or AA supply another kind of classification; they should not be read as complete quality scores or as evidence that one coffee must taste like a similarly sized Colombian bean.
Use the seller’s recipe as a starting point, then compare sweetness, texture and acidity with a consistent preparation. If the coffee is intended for an espresso blend, test its contribution in that blend instead of judging only a different filter recipe. Choose for the documented lot and the result you enjoy. This provides a route through Ugandan coffee without ranking it beneath neighboring countries or claiming a new firsthand tasting.

The conversation
A good question can make a better brew.