Coffee usually develop as two separate beans but about 5 to 10 percent of coffee beans only develop as one lobe which we call 'peaberry.' Many coffee drinkers believe that peaberries are more concentrated than normal coffee beans because of their small size. Tanzania coffee is similar to other washed East African coffees grown at high elevation (Kenya, Zimbabwe) but perhaps not as balanced. It is for the acidity and brightness that people buy Tanzania coffee and it is often used as a blender. This Tanzania Peaberry comes from the north of the country, in the Kilimanjaro area. The elevation is about 4,500 feet, characterized by a winy acidity, medium body.

A classic espresso blend would be 1/3 Tanzania peaberry, 1/3 Indonesian, 1/3 Brazil or Central American.

"We now know that Peaberries are, in some ways, an actual defect. While most coffee cherries produce two beans, an estimated two to 10 percent of cherries contain only one bean. These are the Peaberries. While no one knows yet exactly why a coffee tree produces Peaberries, we do know that they occur in all varietals, but occur more often in certain countries, such as Africa, although they are also found in Asia, Hawaii and South America. They also typically develop in cherries that..."
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