The difference between the characteristics of Coffee Bean Solar and Water washing Coffee Water washing, Solar and Honey treatment steps

Professional coffee knowledge exchange more coffee bean information please follow the coffee workshop (Wechat official account cafe_style)

Solarization method

Tanning is the oldest method of treatment. according to literature, Arabs began to use tanning to treat coffee fruits as early as 1000 years ago in the 11th century. Coffee was called "Arab wine" when it was introduced into the West from the Arab world because of its refreshing effect.

Treatment process

1. Remove floating beans

Pour the coffee beans into a large tank, the underdeveloped inferior beans will surface, and the ripe and full fruits will sink to the bottom of the water. At this time, the floating beans on the surface will be removed, that is, the steps of removing floating beans will be completed.

two。 Insolation

Spread the coffee fruit evenly in the exposure field and turn it several times a day. This process usually lasts about 2-3 weeks, depending on the local climate, when the water content inside the coffee beans drops to 10-14%, the sun drying step is completed.

3. Remove the shell

After the end of the sun, the outer layer of the coffee seed has been dry and hard, at this time, the shell is removed by the sheller, that is, the treatment step of the sun method is completed.

Flavor: because the sun drying method is to let the coffee fruit dry naturally, the coffee beans can ripen naturally inside the fruit and will not be disturbed by the external environment, so the coffee beans treated by the sun method will enlarge their own flavor, mellow and strong flavor. and give off a sweet taste.

Washing method

The technology of washing was invented by the Dutch in the 18th century. Due to the frequent rain and high humidity in some countries, it is impossible to implement the solarization method at all, so although the process is relatively cumbersome, it is the most widely used treatment method at present. The biggest difference from the sun method is the use of fermentation to remove the pectin layer.

Treatment process

1. Remove floating beans (same sun method)

Pour the coffee beans into a large tank, the immature inferior beans will float to the surface, and the ripe and full fruits will sink to the bottom of the water. At this time, the floating beans on the surface will be removed, that is, the steps of removing floating beans will be completed.

two。 Remove the peel and pulp

Through the pulp screening machine (pulping machine), the exocarp and pulp of coffee fruit are removed. (will leave pectin, endocarp and silver peel)

3. Ferment

The purpose of this step is to use biological treatment to remove pectin. Put the coffee fruit treated by the pulp screening machine into the fermentation tank for 16 hours and 36 hours, the fermentation bacteria will dissolve the pectin.

4. Water washing

After completing the fermentation and removing the pectin, the coffee beans will be cleaned again because the fermentation bacteria and impurities will remain on the coffee beans. In order to clean up, this step consumes a lot of clean water.

5. Drying and removing endocarp and silver peel

The coffee fruit is usually dried by machine (or sun-drying) so that the moisture content is reduced to 1014%. Then the remaining endocarp and silver peel are removed by the sheller, that is, the processing is completed.

Flavor: due to fermentation, coffee beans usually have a bright sour and fruity flavor