The method of handling coffee beans pocket coffee machine

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.)

Flat bean

20-19 large, 18 large, 17 quasi-large, 16 ordinary, 15 medium, 14 small, 13-12 extra-small

Round bean

13-12 big, 11 quasi-big, 10 normal, 9 medium, 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 high grade beans 1.200 × 1.500, 3 medium beans 1.000 × 1.200, 4 grade water washed beans 900 × 1.000, 5 grade water washed beans 760 × 900, 6 special grade water washed beans 610 × 760, 7 excellent water washed beans ~ 610

e. Quality

According to the statistical method, the type and quantity of dopants contained in a certain amount of samples are converted into percentage "defect number", and the basis for determining the quality class is that the smaller the defect number is, the higher the quality is.

f. Taste

Brazil, Haiti, Kenya, say and other countries all have their own taste testing methods, which can be exported only after taste testing.

From harvest to shipment

Coffee beans

Coffee bean atlas

After the fruit is harvested, the outer skin, pulp, endocarp and silver skin should be removed before shipping. There are two kinds of methods: drying (also known as natural or non-washing) and washing. The drying method is relatively simple.

First of all, spread the freshly harvested fruit on the exposure field for a week or two until the fruit crackles and dries naturally.

After that, the dried pulp, endocarp and silver peel are removed by a sheller.

Coffee beans refined in this way are slightly sour and slightly bitter. Almost all coffee beans produced in Brazil, Ethiopia, Yemen and other places are obtained in this way. The disadvantage of this method is that it is easily affected by weather and is easy to be mixed with defective beans and other impurities. Therefore, it must be carefully screened.

Another way is to wash the fruit, in which the fruit to be harvested is put into a flowing trough. After the floating fruit is removed, the skin and flesh are removed by a pulp remover. Then put it in the sink to remove the emerging pulp. After that, move into the fermentation tank, soak for half a day to a day, and then dissolve the gum on the surface of the fermented coffee beans. After washing with water, drying it for a few days, drying it with a machine, and finally using a sheller to remove the endocarp to become a commercial raw coffee bean.

Water-washed coffee beans have more beautiful color and less impurities. Colombia, Mexico, Guatemala and other countries adopt this method for about 70% of their output.

Sometimes in the fermentation process, if not handled properly, it may give off fermentation odor and its unique sour taste, but if handled properly, all kinds of beans can give off their unique coffee aroma.

In order to complete delivery to the destination, raw coffee beans are packed in sacks and placed in special containers for long-distance merchant shipping trips.