What is the recent storage time of moderately roasted coffee beans?

Unroasted coffee beans

Coffee beans can be kept dry and unbaked for several years. During baking, the oil of coffee beans moves to the surface and spoils quickly. Therefore, after the coffee beans have been roasted, the storage mode becomes particularly important.

Roasted coffee beans

Whole coffee beans that have been roasted and released oil can be placed in an airtight container and stored in a cool, dry room temperature. Whole coffee beans can be preserved for a month under these conditions.

Vacuum packed coffee

Most of the coffee bought is in vacuum-packed plastic bags. The vacuum process removes oxygen and carbon dioxide from the container, which keeps the coffee powder fresh. Once the container is opened, the coffee will be in good condition for only 7-10 days.

Grind coffee beans

If you buy back whole coffee beans and grind them by yourself, the coffee powder can last for 2 weeks. They are preserved in the same way as whole coffee beans in an airtight container and in a cool, dry place.

Refrigerated coffee beans

Many people mistakenly think that keeping coffee in the refrigerator is the best way. But this is not the case. Coffee can't stand moisture, air and extreme temperatures. When the coffee is taken out of the refrigerator, extreme temperature changes can affect the freshness. In addition, the condensation humidity will also make the coffee beans (powder) spoil prematurely.

Both pouches and tins can be used. After cultivation, the coffee is put into a special vacuum container with an one-way valve, which allows the gas to go out but not in, and does not need to be stored separately, but due to the loss of aroma during the outgassing process, it avoids the formation of rotten odor, but cannot prevent the loss of aroma, because the coffee emits more than three times its own volume of carbon dioxide after roasting. If the coffee beans are in constant contact with the air at the same time, it will accelerate the fat oxidation and make the coffee taste lost. At present, the most effective method is to fill and pack with a special patented one-way exhaust valve, which can release the carbon dioxide produced by coffee internally and prevent the invasion of external air.