Knowing that the majority of these samples are from the same micro-region, altitude, varietal and process; it is extremely important to use a sample roaster that allows us to consistently replicate the selected profile over and over again, as small differences in the roasting degree could "artificially" influence our purchasing decision in one direction or another.
After several trial and error tests (or in this case, roasting and cupping tests), we have designed a roasting profile to evaluate coffees from Rwanda and Burundi, with enough development to allow us to appreciate the potential of each sample, but without hiding the good or bad characteristics with the flavour of the roast.
This is key in origins such as Rwanda and Burundi, where we have the "unpopular" potato defect. Although, it is possible to minimize its probability through a strict hand sorting process when the parchment is still wet, right after finishing the washing and just before beginning the drying (watch video); although, this is not 100% effective and there is always the small chance that we can get a bean with potato that will contaminate the whole cup.
Enjoy your Burundi coffee!