Introduction to the production methods and treatment methods of coffee beans
After harvest, peel, pulp, racing peel and silver peel should be removed before shipping and listing. There are two kinds of methods: drying (also known as natural or non-washing) and washing.
Dry type
The method is relatively simple. First of all, spread the freshly harvested fruit on the sun 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 the weather and is easy to be mixed with defective beans and other impurities. Therefore, it must be carefully screened.
Washing type
The fruit that is about 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. In this way, it will be more beautiful in color and less impurity than dried coffee beans. Colombia, Mexico, Guatemala and other countries use this method for about 70% of their production.
Mode comparison
The coffee beans are treated after harvest, otherwise they will begin to ferment, making the coffee beans smell bad. The main treatment methods are "drying" and "washing", these two methods will cause different flavors. Dry beans have a complete natural mellow, gentle aroma and more gum, while water washing has a good mellow taste, high aroma and lively sour taste, which is also the source of sweetness in espresso.
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How to choose fresh coffee beans, fine coffee, characteristics of coffee beans
Choose fresh coffee beans. When buying, pay attention to whether the color of the beans and the size of the particles are the same. Good coffee beans are shiny and have a strong aroma without being mixed with peculiar smell. No matter what kind of coffee beans, freshness is an important factor affecting the quality. When shopping, grab one or two coffee beans and chew them in your mouth with crisp sound (indicating that the coffee is not damp) and teeth and cheeks.
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How should coffee beans be made? what are the different kinds of coffee? introduction to the grinding degree of coffee beans.
1. Grind the coffee beans with a mill (the finest grinding). If there is a shredder at home or a soymilk machine with crushing function can also be used, but the effect is not very ideal, the particles are relatively coarse. If none of these tools are available, it can be achieved with a rolling pin and a panel. The method of rolling and crushing, in short, should make the particles as fine as possible.
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