咖啡是世界三大饮品之一，另外两种是可可和茶。全世界有超过16亿人饮用咖啡。
Coffee is one of the three major beverages in the world, along with cocoa and tea. More than 1.6 billion people consume it worldwide.
其他的优良钾源包括干果，花生酱，麸皮，肉类，干货蚕豆，豌豆，咖啡，茶和可可。
Other good sources include dried fruits, peanut butter, bran, meats, dried beans, peas, coffee, tea and cocoa.
农民必须选择是种植可可、茶和咖啡等专门的经济作物，还是选择种植养家糊口的主食作物。
"Farmers have to choose between growing specialty cash crops like cocoa, tea and coffee - or food staples to make a living," Ickes said.
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