How to pick coffee and how to deal with it before it becomes a raw coffee bean?

After the fruit of the coffee tree is picked, the four layers of skin wrapped around the coffee beans need to be removed before the desired coffee beans can be obtained. There are two methods to remove the outer epidermis of coffee beans: wet treatment and dry treatment.

1. Wet treatment method:

Wet treatment is also known as "washing method", and coffee beans processed in this way are called "washed beans". The process of processing coffee beans in this way is as follows:

(1)Picking: picking coffee beans is mostly manual operation. When picking, select ripe coffee cherries of similar size for processing with a peeling machine.

(2)Cleaning: Soak coffee cherries in water, remove over-ripe coffee cherries first (peeling with dry treatment), and other coffee cherries need to be soaked for 12-36 hours.

(3)Peeling: Soaked coffee fruit will soften, remove and put into the peeling machine for processing. At this time, the pulp of the coffee fruit will also be partially removed.

(4)Pulp removal: Put the coffee cherries that have not been completely pulped into a washing tank and wash them repeatedly with water to remove the pulp remaining on the fruit surface.

(5)Cleaning the mucosa: Put the fruit with the pulp removed into a clean cleaning tank and clean the mucosa on the surface of the fruit (coffee beans) with water.

(6)Soak screening: Soak the washed coffee beans in water to remove coffee beans floating on the water due to over-ripening.

(7)Drying: coffee beans exposed to sunlight for 1-3 weeks, or drying with a machine, the moisture content of coffee beans from 50% to 12% below.

(8)Storage and Polishing: Coffee beans can be stored after drying. Usually before sale, coffee beans need to be polished with special equipment to remove the silver skin remaining on the surface of the beans.