Preservation of coffee beans how to maintain freshly roasted coffee beans

Isn't it best to roast coffee beans and enjoy them in time?

How many days after coffee beans rest is the best time to enjoy?

On this question, different people have different opinions. Coffee beans will have exhaust phenomenon after roasting, that is to say, the volume of coffee beans will expand when roasting, and the expanded space in coffee beans will retain carbon dioxide.

Over time, this carbon dioxide will gradually leave the coffee beans. This is why coffee beans need to use one-way exhaust valve coffee bag reasons, because roasted coffee beans will exhaust (carbon dioxide), the coffee bag will be sealed, there will be coffee bag expansion phenomenon, encounter relatively thin coffee bag will even be burst. The one-way exhaust valve can also exhaust the gas, while blocking the entry of moisture and oxygen.

Some people say that coffee in brewing to see a rich bubble (foam) out of modern coffee, or exactly fresh coffee, this statement is correct, coffee roasting is indeed the most vigorous exhaust time. If moisture or exposure to oxygen accelerates aging and deteriorates flavor, this is indeed an indicator of good coffee.

When brewing espresso coffee, using too fresh coffee beans and powder is not easy to control. The pressed powder layer will expand, and the high pressure and high water will pass through the powder layer, and it will become very unstable due to exhaust. What needs to be done is to raise beans and wake beans.

There are many ways to raise beans. For example, coffee beans are sealed in aluminum foil bags with one-way exhaust valves and placed in a constant temperature space for 8 to 24 hours. After opening, it has to be placed for about 30 minutes, in contact with the air "waking beans", in order to have a good flavor and moderate exhaust. In fact, different coffee varieties require different bean cultivation and exhaust time, which requires us to slowly understand.

Finally, it is recommended to use roasted coffee beans for 7 days-60 days. After opening, it is best to seal them in the refrigerator for storage. The temperature of the warehouse where coffee beans are placed in the high temperature season should not exceed 25 degrees as much as possible. The ventilation must be good. Small warehouses can turn on the oscillating fan for long-term ventilation.