How to choose coffee beans

The origin of coffee is coffee beans. If you want to taste delicious coffee, the first one is to buy fresh coffee beans. Generally speaking, the coffee beans seen on the market are brown beans, but the raw coffee beans show a turquoise color, and the coffee beans in the raw bean state are easier to preserve for a long time, but the raw coffee beans cannot be directly ground into coffee powder. raw beans must be fried to have the aroma of coffee.

However, the tannic acid contained in coffee will also be evaporated into the air through fried culture, resulting in the gradual loss of coffee flavor over time. The finer the coffee beans are ground, the faster their flavor will evaporate. If according to the general storage conditions, this situation is very difficult to avoid, unless the isolation of oxygen, stored in a high level of freezing, it is possible to completely inhibit the loss of the special flavor of coffee. Therefore, if you want to taste coffee at its best, the most important thing is how to shorten the time from frying to extracting the essence of coffee, and how to shorten the time of contact with the air.

How can I buy coffee beans that have just been fried? If you are not afraid of trouble, you might as well buy your own fresh coffee beans and fry them at home, but if you fry them yourself at home, the technology may not be enough, and you must have skilled skills to stir-fry the best coffee beans. For this reason, it is better to buy fried coffee beans on the market than to save time and be more reliable in terms of technology. If you want to taste a good cup of coffee, be sure to find a shop that sells freshly fried peas. When choosing and buying, you should take the shop where many customers visit as the first choice. In addition, if you want to tell whether the coffee beans sold by the store are good or bad, you might as well observe from the following points:

Is the glass window containing coffee beans directly exposed to the sun?

Second, is the air in the store too hot and wet?

Third, is the glass window soiled by coffee bean grease, shell shavings, etc.?

Is the overall storefront clean and bright?

If you buy coffee beans, how to keep them? If you want to buy coffee beans with a good flavor, you should put them in a vacuum bag as soon as possible after you buy them home, preferably in a place with low temperature and humidity, mostly in the refrigerator in the family, but don't have a bad smell in the refrigerator. The ground coffee beans are also used up within a week to ten days as soon as possible to prevent the flavor of the coffee from deteriorating.