Boutique coffee SL28 variety is extremely rare in Central America, this tree species originated from Tanzania in East Africa

The SL28 variety is extremely rare in Central America. It originated from Lake Tanganyika in East Africa. It was discovered in 1931. It has broad and reddish leaves, can adapt to high altitude environment, and has excellent drought and disease resistance. It also has higher yield than traditional tree species and is unique in flavor. In 1935, the Scott Coffee Laboratory Scottish Laboratory named the variety SL,28 after the initial letter of the laboratory, which was the serial number of screening, and then it was planted in Kenya. At present, there are only a few manors with both strength and experience in Central American countries.

A bourbon line screened and cultivated by French and British missionaries and researchers in Kenya at the beginning of the 20th century. Over the past hundred years, it has adapted to the high concentration of phosphate soil in Kenya, giving birth to the special sour and fragrant spirit of Kenyan beans, which is different from bourbon beans in Central and South America. This Kenyan native species was created by Scott Laboratories in 1930, known as SL for short. Agronomists wanted to find a kind of bourbon with high yield and resistance to diseases and insect pests, and obtained SL28 through experiments. SL28 is a genetic variant with a mixed pedigree of French missionaries, mochas and Yementibica. The original goal of breeding SL28 was to mass-produce coffee beans with high quality and resistance to diseases and insect pests. Although the output of SL28 was not as large as expected, the copper leaf color and broad bean-shaped beans have great sweetness, balance and complex flavor, as well as remarkable citrus and black plum characteristics.