The method of taking beans in the sun for the first processing
Solarization is a traditional method of primary processing of coffee beans, and ancient coffee growing countries such as Ethiopia and Yemen still use solarization almost exclusively for raw beans.
Sun-drying begins by spreading tank-identified beans, ripe or semi-ripe, on a drying ground. The exact time depends on local climatic conditions, and generally takes two weeks to four weeks. When the moisture content of the coffee beans is reduced to 12%, then use a husker to grind off the dried pulp and silver skin.
Sunlight treatment is very demanding on the climate. If it rains during the sun, it will make the beans regain moisture and mold.
Sun-dried beans are yellow when raw and brown in the center when baked, rather than white when washed.
Sun-baked beans have a relatively better sweetness and body, and less sourness, but the quality is less stable and will have greater fluctuations.
Solarization is widely used not only in Ethiopia and Yemen, but also in Africa and Indonesia, where Rochester coffee is grown, due to its low cost.
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The method of washing the beans in the initial processing
Washing is the most popular and widely used method of raw bean treatment at present, and most of the boutique coffee beans will choose the washing method. In South America, all countries except Brazil choose to wash raw beans. Washing is the most scientific and technological method among all the treatment methods, and multiple screening is used to ensure the uniformity and stability of coffee bean quality. First of all, still
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Coffee processing process
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