Kenya Coffee grading introduction: raw Bean processing and production of Kenya AA Coffee

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Kenya distinguishes coffee beans by particle size, with grades of AA, AB and BB

The AA grade is approximately equivalent to screen 17 or above (the number of mesh screen is the aperture size of the screen)

AB level is about the same as screen 16.

The BB level is approximately equivalent to screen 16 or below.

Mode of production: all coffee beans are peeled, dried, fermented, washed and dried in the sun.

Raw bean treatment: coffee cherries are hand-selected and coffee farmers remove overripe or immature cherries before production. The peel and pulp were removed by 3disc Aagaarde peeling machine, and then the coffee beans were divided into three grades according to the density of coffee beans. The raw beans of grade 1 and 2 were fermented separately, while the raw beans of grade 3 were of low quality. The raw beans should be fermented in the shade for about 24 to 36 hours. After fermentation, the raw beans are washed and graded again according to the density on the cleaning channel. Then the raw beans are randomly soaked in clean water overnight.

Drying: sun-dried for 12 to 20 days, placed in an elevated bed in Africa, the drying time will be adjusted according to weather conditions, coffee beans will be covered with plastic cloth at noon and night to avoid rain.

Altitude: 900-1800 m (Kenya is a volcanic plateau)

Soil: mainly clay and volcanic red soil, clay occurs in highlands and volcanic steep slopes, generated from volcanic rocks, compared with other tropical soils, clay has better chemical and physical properties.

This is why Eva will say that Yangmingshan is the best place to grow coffee in Taiwan, because the soil high enough is not good. Coffee tree is a very land-consuming crop, it must grow in a place where the soil is fertile enough, and volcanic soil is the most suitable place for coffee growth, and the rest depends on additional fertilization, whether nitrogen, phosphorus, potassium, calcium, magnesium. For coffee trees, they are all very important!