The Monk of Mokha by Dave Eggers

Mokhtar Alkhanshali is twenty-four and working as a doorman when he discovers the astonishing history of coffee and Yemen’s central place in it. He leaves San Francisco and travels deep into his ancestral homeland to tour terraced farms high in the country’s rugged mountains and meet beleaguered but determined farmers. But when war engulfs the country and Saudi bombs rain down, Mokhtar has to find a way out of Yemen without sacrificing his dreams or abandoning his people.