The effect of sun washing on coffee beans what is the difference in flavor?

Coffee washing

Another method for the treatment of coffee berries is semi-washing. This method is developed on the basis of washing. The first step is the same as washing. When the fruit turns red, it is picked and put into the pool. The immature fruit floats and the ripe coffee fruit sinks. Remove immature coffee berries in this way. Then remove the silver peel of the ripe coffee berries with a special machine, spread the berries on the ground, dry them and then wet them, and finally use a special machine to grind off the dried flesh and take out the coffee seeds. These are raw coffee beans that have been semi-washed.

The advantage of this raw coffee bean treatment method lies in: on the one hand, it saves water, on the other hand, it avoids mildew in the fermentation process and other problems that are not conducive to the quality of coffee beans. Mantenin produced in Indonesia is mostly semi-washed. Semi-washing is also used in Brazil in recent years. Brazil is the only country in the world that has both sun, water and semi-washing treatments.

1. Choose beans:

Put the harvested fruit in the water tank, and the ripe fruit will sink, while the unripe and overripe fruit will float up and can be removed.

2, dry:

Put the selected ripe fruit in the square and expose it for 5-6 days until it is fully dry. At this time, the fruit becomes dark brown and the moisture content is 13%.

3, shelling:

After drying, the peel becomes fragile and easy to fall off, and can be removed by machine. Farms run by enterprises usually have their own shelling factories, while small farms are processed by processing centers.

4, selection and grading:

Exquisite farms identify defective beans manually or by machine, pick them out and throw them away. Manual selection usually uses a transmission belt about 1 meter wide, with several female workers sitting on both sides visually picking out bad beans, and some good farms are even selected several times until defective beans are not seen. Machine selection rules use computers to identify defective beans, followed by a grading process that divides coffee beans into several quality grades according to established standards. Good coffee enters the selected coffee market, while bad coffee flows into the commercial coffee market.

5, polish:

The exocarp and endocarp can only be removed by shelling treatment. At this time, the silver film is still wrapped in the outer layer of the seed, and the film has to be ground off by machine. Then, pack the coffee beans into a bag of 60KG. The weight of bags varies slightly from region to region. Most of them use sacks.