This is the most primitive, simplest and oldest treatment of coffee.

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The method of tanning gives a strong aroma of wine.

This is the most primitive, simple and oldest treatment of coffee. According to relevant literature, Arabs began to treat the fruits of coffee by tanning as early as 1000 years ago in the 11th century.

Treatment process

First pour the coffee beans into a large tank, and the poorly developed beans will float on the surface and pick up the ripe and full fruits that sink to the bottom of the water.

The tile is exposed to the sun, often flipped over, picking out defects.

When the water content in the coffee beans is reduced to 10%-14%, the peel pectin can be knocked off with a sheller, and the whole solarization method is complete.

Shortcoming

The sun method depends entirely on the weather, and the dryness of coffee fruit is difficult to control. If the sun is not clean, it is easy to mix with impurities. In the process of the sun, the pulp of the coffee fruit has not been removed, so it is often moldy and rotten. Therefore, in the view of many people, the quality of sun-exposed coffee beans is not controllable and the level is not too high.

Advantages

Except for the first step of using water to filter out shoddy beans, the other steps no longer need any water and can be used repeatedly. In areas where water resources are not abundant, this method simply cannot be better.

Sun treatment

Sun treatment is the simplest and cheapest traditional method in coffee bean processing. During processing, the harvested fruit should be spread on the cement floor, brick floor or straw mat, dried in the sun, and often raked evenly to prevent fermentation. If it rains or the temperature drops, the fruit must be covered to prevent damage.

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