How to raise coffee beans by hand? is it so difficult to swallow when the coffee beans are not well raised?

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Qianjie-brief introduction of individual coffee and beans

Most of us know that coffee beans are ripe beans, which are cooked by roasting machines. Raw beans are processed and stripped of the remaining seeds from the pulp of coffee trees. The raw beans themselves have no special fragrance. Most of them have only some grass and fermented flavor. Only by roasting at high temperature can the rich aroma and flavor of coffee beans be aroused.

After roasting mature coffee beans, due to the volume expansion, there are holes in the cell wall, which are occupied by carbon dioxide-based gases produced during the baking process. At this time, if you directly brew coffee beans just out of the pot, most of them are difficult to taste good, the reason is these gases, because a large number of gases exist, it is difficult to fully contact the flavor substances in water and coffee, the flavor substances are difficult to release, and carbon dioxide itself will affect the flavor of coffee.

So the coffee beans after roasting should be kept at rest for a period of time after packaging, which is about 3-5 days. If the coffee is roasted deeply, it needs to be extended to 7-10 days.

This period of static preservation is the "bean cultivation period". The coffee beans in the beans do not do nothing, they will slowly discharge the carbon dioxide from the body, and part of the carbon dioxide will accumulate inside the coffee package. the formation of a gas-wrapped inert environment allows coffee beans to enter a slow-ripening dormant state, while the other part is discharged from the coffee bag through an one-way breathable valve on the package.

The so-called one-way breathable valve is a small organ on the coffee bag, the gas can only be discharged from inside to out, and the external air and water vapor can not enter the package, ensuring the freshness of the coffee.

Once the bean cultivation period is over, when we open the coffee bag and use it, the outside air quickly enters the coffee bag, and the coffee beans are quickly awakened from the dormant state and can immediately enter the best working condition. At this time, the flavor of coffee beans can be said to be getting better.

However, there are two sides to everything. After contact with the air, the coffee beans gradually begin to release flavor substances, so that the coffee product is stable and the flavor is excellent, but it immediately enters the "oxidation period". The oxygen in the air will gradually erode the coffee, not only take away some of the flavor substances, but also spoil the substances left in the coffee beans.

Therefore, after we take out the coffee beans we want to use each time, we should seal and pack them immediately; and most importantly, we should try to buy coffee beans and grind them by ourselves, instead of buying pre-ground coffee powder. the oxidation rate of coffee powder is much faster than that of coffee beans.

Knowledge: beans must be packed in a bag with an one-way breathable valve.

In short: Qianjie is a coffee research hall, happy to share the knowledge about coffee with you, we share unreservedly just to make more friends fall in love with coffee, and there will be three low-discount coffee activities every month. The reason is that Qianjie wants to make more friends drink the best coffee at the lowest price, which has been Qianjie's tenet for 6 years!

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