Ethiopia is the birthplace of coffee ... The traditional method calls for washing green coffee beans, roasting them on a flat steel pan, and pounding them with a mortar and pestle.

The cups are accompanied by matching white saucers, with designs that echo a Jebena, Ethiopian pottery that’s used to brew coffee. “Back home, we roast coffee from scratch two to three times ...

SEM images showing porosity evolution from green coffee (G) through R0-R7 roast batches of washed Ethiopian coffee. Credit: Scientific Reports For the third and final tool, the team turned to ...