How can we better ensure the freshness of coffee?

General food has a shelf life, which can be eaten during the shelf life, and coffee beans also have their own shelf life, but unlike ordinary foods, the quality of coffee beans is judged by "shelf life" rather than "shelf life".

As we all know, one of the charm of coffee lies in its aroma, and the aroma of coffee depends on its freshness. After roasting, the aroma of coffee evaporates slowly, and the aroma will be completely lost in about a month. At this time, even if the coffee is not past its shelf life, even if it can still be eaten, it has lost its soul-fragrance.

So how can we better ensure the freshness of coffee?

After roasting, do not pack the coffee, because it has to continue a series of internal reactions to release gases such as carbon dioxide, after about 48 hours, wait for the internal reaction to complete before looking for the best way to preserve it.

The first principle of coffee bean insurance is to avoid the volatilization of its own aroma, and the other is to avoid the mixing of external smells.

Therefore, coffee beans should be kept away from light, room temperature and air.

The most easily deteriorating ingredient in coffee is fat, which is easy to produce a bad oil smell after fat spoiling. generally, plastic products are easy to accelerate the deterioration of fat, so try to use glass bottles to fill them with porcelain and metal fixtures, but it is better to use glass bottles considering the convenience of cleaning. Coffee beans are easy to absorb odor and oxidize after contact with air, so it is also very important to keep the container airtight.

Some friends like to keep the coffee beans in the refrigerator. Cold storage is good for insurance, but once the frozen coffee is taken to the bean surface at room temperature, it will absorb water vapor, so the refrigerated coffee must be used at once. And the refrigerator itself will have a lot of miscellaneous smell, poor sealing is easy to change the taste of coffee beans, so refrigerated storage is not recommended.