By Gregory Warner NPR July 22, 2013 As we reported during in April, coffee aficionados for single-origin roasts. The village of Boto in the Ethiopian highlands was selling some of the cheapest coffee in Ethiopia, the notorious "Jimma 5." Now it's selling a bean coveted by specialty U.S. roasters, and has built a road with some of the proceeds. Courtesy of: Gregory Warner/NPR The professional prospectors working for specialty coffee companies will travel far and wide, Marco Polo-style, to discover that next champion bean. But to the farmers who hope to be that next great discovery, the emergence of this new coffee aristocracy is less Marco Polo, more Cinderella: How do you get your coffee bean to the ball? Consider this tale of impoverished Ethiopian coffee growers whose beans once sold for rock bottom prices: The yellowed highlands around the city of Jimma in Ethiopia are where coffee was discovered in the 8 th century. But...