There are five ways to preserve coffee beans correctly. Can coffee beans be kept in the refrigerator?

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Making a cup of coffee when we get home from work or when we wake up in the morning can often make us feel lucky in our lives, but we must make sure that the coffee we use is fresh in order to avoid this stain and spoil the good time of enjoying coffee! When it comes to how to preserve coffee, we must first learn how to identify fresh coffee! Whether the coffee is fresh or not is easy to tell from the surface of the coffee bean itself, and the brighter the appearance of the coffee bean, the longer the coffee bean is kept. But this is not to say that the brighter the coffee beans are, the less fresh they are. It should also be compared with beans with the same degree of baking.

The oil brightness of coffee beans

Green coffee is the unbaked coffee on the upper left, light roasting on the upper right, medium baking on the lower left, and heavy roasting on the lower right.

We can clearly see that the more the coffee itself is roasted, the more the oil will run out and the brighter the appearance. And whenever the coffee becomes less and less fresh, the oil of the coffee seeps out and is brighter than the beans roasted at the corresponding level.

The exhaust degree of coffee

Coffee exhaust when buying fresh coffee, there is usually an exhaust valve on the sealed bag, because the coffee beans that have just been roasted will emit carbon dioxide. Although these dioxides can cause the taste and flavor of brewed coffee, we can use exhaust as an indicator of whether the coffee is fresh or not. In other words, the next time you buy coffee beans, the sealed bag is quite dry and flat, which is usually left on the shelf for a long time and may not be fresh.

Now that we all know how to tell whether the coffee is fresh or not, we can use the fresh coffee for preservation!

The correct preservation method of coffee

By storing coffee, we refer to the coffee bean itself, because as long as the coffee is ground, it usually cannot be used within one or two days, because the surface area of contact with air increases after grinding, which greatly accelerates the speed of oxidation. So coffee powder is not worth saving, it can be used at the moment. How to make sure the coffee is fresh? We need to pay attention to the following points:

Buy a small amount of coffee, but a few more times

Because the amount of coffee we consume every day is limited, the easiest way to make sure it's fresh is to buy a small amount of beans. Coffee roasting is not the best. The best time to drink coffee beans is from the 14th day to the 4th week after baking, and then it will slowly become stale and stale. I would suggest that you estimate the amount of coffee you use every two weeks, and then buy beans every two weeks to make sure the coffee beans are fresh at any time!

Seal less contact with air

The main reason why coffee beans are not fresh is that the oxygen in the air makes them oxidized. the easiest way is to put them in a sealed jar to isolate the air contact! Or put it in a chain bag and use a seal to minimize the chance of coffee coming into contact with air. You can also put the coffee beans in a chain bag with an exhaust valve. The main structure of the exhaust valve is to let the carbon dioxide produced by the coffee out of the bag and prevent the air from escaping into it, but note that the opening at the top must be really tight.

Seal less contact with moisture

The coffee itself absorbs moisture. The moist air can easily make the coffee spoil after absorbing enough moisture. We must put it in a dry place. Many people will put coffee in the refrigerator for preservation, but this is very incorrect! There are two reasons. Refrigerators can easily produce condensate on the inner wall of our containers. If the amount of coffee is small, it is indistinguishable to the naked eye. Another reason is that extreme temperature and humidity changes in the refrigerator are very difficult for coffee to maintain its flavor. Even if the coffee itself is not bad, you don't want to drink coffee without coffee flavor, do you?

Avoid contact with heat sources

Some of the more high-end coffee machines have a warm-up place above the cup, usually directly above the boiler. Some people put coffee in sealed cans, but put sealed cans on it. We have to make sure that the coffee is kept in a cool place and that our coffee is not indirectly preheated, otherwise you will find that the rate of coffee oil will grow multiple times!

Avoid exposure to sunlight

It is recommended to put the coffee in the sealed jar and put it in the locker, which is the best storage choice. You can also put several dehumidifiers in the locker. Although the dehumidifier is not necessary, make sure the sun does not shine directly on the coffee beans! Some people will say, then why not just use opaque sealed cans? It is also feasible, but it is easy to see the preservation state of existing coffee beans directly from transparent containers.

Conclusion:

We know how to distinguish the freshness of coffee. With fresh coffee, we must have a good method of storage! The above five methods enable us to drink good coffee anytime, anywhere!

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