How a South African village turned an alien tree into superfood coffee

Calvinia, South Africa – It’s 7:30am on a Monday and there’s already a queue of about 40 men, women and children against the wall of the still-locked warehouse. March temperatures in the South African backwater of Calvinia, some 430 kilometres (267 miles) north of Cape Town, average 30 degrees Celsius (86 degrees Fahrenheit) – but today an unseasonable cold front has everyone huddling together to keep warm. Wispy grey clouds blanket the usually-sunbaked Hantam Mountains and an empty chip packet skids past the police station across the road. The crowd...