Basic knowledge of fine coffee specifications and grades of coffee beans

a. Washing / non-washing

Washing type: in the sink, after rubbing with water and utensils, the pulp and colloid are removed and dried, which is called washing coffee bean with uniform quality.

Non-washing type: after the sun is naturally dried, the pulp and peel is removed by a sheller, and its quality is unstable.

b. Flat beans / round beans

The fruit of coffee consists of two oval seeds opposite each other. The connecting side of each other is a flat joint, which is called flat bean. But there is also a round seed called a round bean, which tastes no different. Ripe and red coffee cherries have multiple structures. In the middle is the predecessor of the coffee bean, the light green seed.

Generally speaking, the fruit of coffee is made up of two oval seeds opposite each other. The side that connects with each other is a flat joint, so it is called flat bean. But some are made up of a round seed, and its taste is no different.

c. The size of coffee beans

Filter number (mesh no.) Coffee bean size

Flat bean

20-19 extra large

18 big

17 quasi-big

16 ordinary

15

14 small

13-12 extra-small

Round bean

13-12

11 quasi-big

10 ordinary

9

8 small

d. Altitude

According to the elevation of the cultivated land, it can be divided into three, four, seven and other grades. Generally speaking, the quality of highland beans is better than that of lowland beans, and the price is higher because of the increase in freight.

Grade name elevation (m)

1 special grade beans 1.500 ~

2 first-class beans 1.200 and 1.500 ~

3 medium beans 1.000 and 1.200

4 special water washing beans 9001.000

5The beans are washed with good water 760mm 900.

6 special water washing beans 610-760

7 excellent water washed beans ~ 610