Most coffee trees produce cherries with two seeds. The seeds are then processed and become green coffee beans as we know them. Occasionally, cherries will produce only one seed, known as a peaberry. These special coffee beans are slightly smaller than the norm, but pack a more concentrated flavor. Tanzanian Peaberry is shade-grown on the slopes of Mount Kilimanjaro. It has many of the same fruity flavor notes as a Kenya, with a lighter acidity.