Can coffee beans be stored in the refrigerator? What should I pay attention to when freezing coffee beans? Why are the beans crispy after freezing?

After roasting for a long time, coffee beans will convert the substances accumulated during planting and processing into a large amount of aroma, taste, and carbon dioxide. When baking stops, these substances stop producing and continue to drain out. Before it is completely lost, the brewed coffee will have a very rich aroma. In addition to caffeine, most people drink coffee in order to feel the taste feast brought about by these flavors.

But sometimes, you may buy too many beans in one breath, so that you can't finish them during the appreciation period. If it goes on like this, the aroma of beans will evaporate as much as carbon dioxide. At that time, the coffee brewed not only does not have a rich aroma, but also does not drink well, only the water-soluble taste of the beans themselves. Therefore, when we buy too many beans to finish within the appreciation period, we will try our best to make the aroma substances of coffee beans lose more slowly.

The conventional practice is to rely on sealing to reduce the oxygen contact with the coffee beans, which can effectively delay a certain amount of time and make the beans have a longer taste period. But just sealing is not enough, after all, beans in addition to oxygen, but also need to stay away from the light, high temperature, humid environment. Therefore, when we seal the beans, we also need to put them in a dark, cool and dry environment. In recent years, such a novel storage method has emerged. Because it claims to have a better "fresh-keeping" effect than sealed preservation at room temperature, people begin to follow suit. And "freezing" is this novel way of storage. I believe everyone who has not tried must be very curious, whether such a strange way can really play the effect of preserving aroma.

To put it simply, it is indeed possible. Because of the extremely low ambient temperature, the aroma loss rate of coffee can indeed be slowed down. But what we need to know is that freezing can only slow down the loss of aroma, but can not completely inhibit the loss of aroma. Second, frozen coffee beans will have more details to pay attention to, and if they are not handled properly, it will have the opposite effect. So let's take a look at what we need to pay attention to in frozen coffee beans.

First, the first thing to pay attention to when sealing frozen coffee beans is to seal them. I believe people will not specially buy a refrigerator to "keep" coffee beans (some wallets are extremely powerful), so in addition to coffee beans, the refrigerator will store other items.

If we do not do a good seal, then not only can not play the lock incense effect, but also let coffee beans absorb the taste of other materials, commonly known as "refrigerator flavor", which is putting the cart before the horse. Therefore, we must pay attention to sealing before freezing to prevent odor erosion.

Second, condensation phenomenon No matter what kind of food it is, when we transfer it from the environment of more than ten degrees below zero to the room temperature of more than twenty degrees, the originally dry items will quickly condense a lot of small droplets, which is the same for coffee beans. (see figure ↓)

Therefore, we need to grind and cook the coffee beans as soon as they are taken out of the frozen environment. In order to avoid the condensation phenomenon to make the coffee beans damp, and then affect the extraction phenomenon; or, after being taken out, do not open the seal first, wait until the coffee beans return to the normal temperature state, and then tear the seal, so that the coffee beans will not produce condensation.

Third, do not take it repeatedly when the coffee beans are taken out of the frozen environment, it is best not to put them back. Because this will not only aggravate the emergence of moisture, but also accelerate the loss of aroma of coffee beans. Therefore, most people will pack the beans before freezing. Separate and seal one serving of beans so that each time the beans are taken, the other beans will not be affected.

All in all, frozen coffee beans do have a certain delaying effect, but relatively, pay more attention to things, we need to put more energy into ensuring the taste of a cup of coffee. Therefore, Qianjie will still recommend buying a moderate amount, so you don't have to work too hard for the flavor, and it's better to drink fresh coffee!

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