Can coffee beans be frozen in the refrigerator? How to preserve coffee beans is not easy to stale?

Recently, everyone must have taken advantage of the Singles Day holiday to hoard beans, asking the front street questions such as "how long can the coffee beans remain unsealed at most" and "how can the opened coffee beans be preserved to reduce the speed of flavor loss?" Let's talk about the preservation of coffee beans in front of the street today.

How long can the flavor of coffee beans be preserved? The people who can ask this question are basically friends who want to pursue the flavor of coffee, but Qianjie still needs to popularize the question of flavor and taste. Flavor refers more to the aroma, such as the aroma emitted when the coffee powder is ground, and the brewed coffee liquid is permeated with a good smell. The aroma of the coffee is relatively heavy when it is ground, some peanut clothes and almonds, and the aroma of the coffee is also light and heavy. But there is still a general taste of coffee, which mainly comes from the water-soluble substances in coffee, which are not easily volatile.

So what we're talking about is that the flavor is gone, so it's not as good as it used to be, but if it's still within the shelf life (within 12 months), it's still drinkable. On the other hand, the flavor of coffee beans reaches its peak after baking and after the bean growing period, and then the flavor will slowly decrease until it runs out. The length of the bean cultivation period and the taste period (flavor period) varies from bean to bean, and it is also related to the preservation environment, so a general range is generally given. The bean cultivation period is about 4-7 days, and the taste period is about 30-45 days. Can you keep it longer by blocking the exhaust valve? After receiving the beans, some friends immediately seal the exhaust valve with duct tape to prevent flavor leakage. In fact, this practice seems reasonable but superfluous. Because this one-way exhaust valve is only to prevent coffee bean exhaust from breaking the bag; normally, without external force, the exhaust valve does not work, and only when there is too much gas in the bag will the excess gas be discharged through the pressure difference. Seal the exhaust valve, whether the coffee beans should exhaust or exhaust, and whether the bag should expand or will expand.

Sealed can & original packing bag? Some friends pour coffee beans into sealed jars and store them after opening them. In fact, if it is a well-sealed jar and a sealed original coffee bag, the effect of preserving coffee beans will not be much different. The frequency and time of opening the package have a great influence on the loss of coffee flavor.

Every time you open the bag, it is equivalent to a connection between the inside and the outside, and the flavor of the coffee beans will be lost more quickly. So, that's why some coffee beans have a good flavor when they are opened for the first time after 30 days of storage, but when they are boiled again in two days, the flavor drops sharply. Keep coffee beans frozen in the refrigerator? Some friends see that cryopreservation can slow down the loss of coffee flavor and follow suit. But frozen coffee beans also have their own problems, and if they can't be handled properly, it's actually worse than not keeping them frozen.

The first is the problem of crosstalk. If you put other frozen items in the freezer at home, and then put the coffee beans frozen, it is possible that the coffee beans will absorb other odors, or the cold storage area that has not been cleaned for a long time, it is also easy to produce "refrigerator smell". It is also easy to affect coffee beans. The second is the problem of thawing. When we took out a bottle of drink from the refrigerator, the dry plastic bottle was soon filled with small drops of water. The principle of frozen coffee beans is the same. When the coffee beans change from-10 degrees to 28 degrees room temperature, the surrounding water vapor condenses into water droplets attached to the beans, making the beans damp. The best way to preserve flavor no matter which method is used, the loss of coffee flavor over time is inevitable, so the best way is to calculate your own coffee consumption and then buy the amount consumed in a month according to your demand. drink up and then buy freshly roasted coffee beans, do not take advantage of temporary bargain to hoard a large number of coffee beans, in the end, run out of flavor, can not drink will become a waste. If the coffee beans are not unsealed, try to place the original bag in a cool, dry place away from the light. After opening, you can use the sealing strip on the original package for sealing, but check the tightness of the package after sealing. If you find that the bag is broken, you need to use other sealed containers to keep the coffee beans.

In the case of ensuring that the coffee beans are kept sealed and the bags are opened at normal frequency, the flavor of coffee beans can be preserved for 30 days.