How much is the packaged coffee beans _ introduction of common preservation methods of coffee beans _ recommended brands of packaged coffee beans

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Many friends bought coffee beans, which led to the rapid loss of coffee flavor due to improper storage. So today I will tell you how to store coffee beans at home so that the flavor of coffee beans can be lost more slowly.

First of all, it is clear that for roasted coffee beans, the shelf life is not very important, because they are very long, shelf life is what we should pay attention to. As for coffee powder, er, there seems to be no way to prolong the shelf life, so let's freshly grind it in order to drink good coffee.

● freshly roasted coffee beans are oxidized with time exposure to oxygen, the oil quality is deteriorated, the aroma is gradually volatilized, and the aging is accelerated by temperature, humidity, sunshine and other preservation environment.

When the coffee bean comes into contact with the air, its flavor begins to lose, and the area of a complete coffee bean in contact with the air is limited, but the coffee bean forms a powder after grinding, and the surface in contact with the air is magnified thousands of times. there are countless noodles in contact with the air, resulting in a rapid loss of flavor, usually extraction should be carried out within 15 minutes after grinding. Therefore, when making coffee, grind and use it as much as possible, so as to ensure the quality of each cup of coffee. Never buy directly ground coffee. Say the important things three times.

Therefore, in order to prolong the shelf life of coffee beans, how to package and preserve coffee beans has become a special work.

Coffee beans gradually release carbon dioxide after baking, and coffee beans are usually undrinkable after roasting, because they contain a lot of carbon dioxide and pyrotechnic odors produced by baking, so they need to raise beans. Generally, the time of growing beans is determined according to different baking degrees, the time of baking is shorter than that of shallow, and the time of baking is deeper, and the time of cultivating beans is longer. Generally, it is more reasonable to raise beans for about seven days. The flavor of coffee beans reaches the best time to taste in about seven to ten days, and the flavor continues to develop, and it will gradually decrease after a month, so we recommend that freshly roasted coffee beans are finished within a month, preferably no more than two months, and will not go bad, but the smell will be weaker and weaker.

Therefore, the packaging of coffee is designed according to the characteristics of roasted coffee. Packaging should not only avoid contact with air oxidation, but also need to deal with carbon dioxide produced by coffee beans, of course, the safety of contact with food must be put in the first place.

The enemies of coffee beans are: oxygen, humidity, temperature, light, so the key to preservation is: sealing, protection from light, moisture, exhaust.

Based on the above theoretical principles, we need to choose the appropriate containers for the preservation of coffee beans.

Here are several common ways to preserve coffee beans:

Preservation of ● original packing bag

Nowadays, most coffee beans use one-way exhaust valve bags lined with food contact grade aluminum foil. Aluminum foil can block light and air. The function of the one-way exhaust valve is to discharge too much carbon dioxide so that the bag will not burst without opening.

Seal the mouth of the bag immediately after taking out the coffee beans, and squeeze out the excess air in the bag as far as possible to minimize the contact between the coffee beans and the air (there is an one-way exhaust valve on the bag, which can only be out of air, not in air). After sealing, store in a cool and dry place at room temperature. In fact, the preservation effect of the original bag is very good, it is recommended to use the original bag in the case of household use.

● sealed pot preservation

Using sealed cans to preserve coffee beans is also a good way, but it should be noted that the quality of sealed cans must be good, if the quality is too poor, it is better to use the original packaging bag, there is another point, do not buy transparent cans for the so-called beauty, light can improve the speed of coffee oxidation, it is recommended not to buy transparent ones. Some commercial coffee shops and other use environment, many people will use large transparent sealed cans, this specific treatment, because transparent cans can directly see baked beans, the business environment helps consumers to choose, in addition, coffee shops use a large amount of beans, so this is determined according to the usage, and there is no consideration for prolonging the shelf life if one can be used up in a few days.

● vacuum canister preservation

The vacuum tank can pump out the air in the tank to form a vacuum, which is a good way to store coffee beans without oxygen and water vapor, but it should be noted that this method can only delay the shelf life of coffee beans. It does not guarantee that the coffee beans are fresh for a long time. There are more and more vacuum cans on the market, and the price is getting cheaper and cheaper. The quality is mixed, but the quality is reliable. The one of poor quality is not as good as that of the original package. This is recommended for household use. If you drink slowly, you can consider a bag that takes more than two months to finish.

● refrigerator preservation

The low temperature in the refrigerator can slow down the oxidation of coffee, which is a good place to store, but there are many conditions in the refrigerator, try to eliminate it in order to effectively preserve coffee beans, otherwise it will be counterproductive. Using the refrigerator to save coffee beans is not necessary and troublesome. If you have to use the refrigerator to save coffee beans, please pay attention to the following points:

1. Don't put it in the fresh-keeping layer, put it in the frozen layer. Although the fresh-keeping layer is also low temperature, but the humidity is too high, which is not conducive to the preservation of beans, the frozen area has a lower temperature and very low humidity, moisture has a greater impact on the quality of coffee than temperature.

two。 Seal well, if the sealing is not good, the moisture in the refrigerator will enter the packaging, affecting the preservation of coffee beans; another thing, we know, coffee beans are very easy to absorb taste, if the seal is not good, the smell in the refrigerator is absorbed by coffee beans, then these coffee beans can also be said to be waste. Therefore, some people use discarded coffee beans to absorb the miscellaneous smell in the refrigerator, and the effect is quite good.

3. When coffee beans are just taken out of the refrigerator, because the temperature of the beans is too low, they will condense water vapor in the air and form small water droplets on the surface. After grinding, these water droplets will turn the coffee powder into lumps, resulting in uneven brewing. So, after the coffee beans are taken out of the refrigerator, take out some of the rapid grinding and brewing coffee, and put the rest back in the refrigerator immediately.

4. After the coffee is roasted, its internal development is still in progress. if the beans are too fresh in the refrigerator, they will stop the development of flavor. It is recommended that your coffee beans be preserved in a proper environment for a few days until the flavor is developed. Put it in the fridge.

We do not recommend putting coffee beans in the refrigerator unless you are sure to travel for a long time or not to drink them for a short time.

Some of the above methods can only appropriately prolong the shelf life of coffee, and are not suitable for keeping for too long, so it is suggested that you should not buy too many coffee beans at one time, and buy them after drinking or almost finished. Drink fresh beans within a month, try not to exceed two months, ah, fresh is the life of coffee beans.

Brand recommendation of ● packaged coffee beans

Qianjie coffee freshly roasted single product-Italian packaged coffee beans: Yega Sheffield Coffee, Brazilian Coffee, Mantenin Coffee and so on are fully guaranteed in brand and quality, suitable for all kinds of utensils. And more importantly, the performance-to-price ratio is extremely high, a pack of half a pound 227 grams, the price is only 80-90 yuan. According to the calculation of 15 grams of powder per cup of hand-brewed coffee, 15 cups of coffee can be made in a bag, and each cup of coffee costs only about 6 yuan, which is very cost-effective for the normal price of 30 or 40 yuan a cup in a cafe.

Qianjie coffee: Guangzhou bakery, the store is small but a variety of beans, you can find a variety of unknown beans, but also provide online store services. Https://shop104210103.taobao.com