Gebremedhin Woldegiorgis, senior potato researcher at the Ethiopian Institute of Agricultural Research, and Denis Griffen, potato breeder at Teagas, inspect potato plants at the Teagasc Research Centre in Oakpark, Carlow. photograph: dylan vaughan

The hills of Chencha in southern Ethiopia, over 2,700m above sea level, are not a place where you might expect the Irish potato to be thriving undergr(...)