How long can coffee beans last after being ground into powder? How long is the shelf life of coffee powder? How to store coffee beans after being ground into powder? How many days is the flavor appreciation period for a single coffee powder?

Recently, due to the crazy discounts on Double Eleven, many friends have gathered to place orders online, and the customer service of Qianjie Taobao Tmall has received more coffee problems than before. Questions related to substitute grinding such as "How long can coffee beans be put after grinding" and "How many days after grinding is best to drink them?" are the most frequently consulted by these friends recently.

In fact, no matter which question it is, everyone is not asking about the shelf life of coffee powder. Because it is well known that the shelf life of coffee beans/powder can reach up to 365 days, what everyone is asking about is how long the taste period of coffee beans can last after they are ground into powder. Maybe many friends don't quite understand the meaning of the tasting period, so here is a brief introduction: The tasting period of coffee beans/powders refers to their best tasting time. As long as we brew them during this time, you can get a cup of coffee with the richest flavor and the most complete experience.

The reason why coffee has such a taste time is because the flavor we taste from it is volatile. To be precise, these aroma molecules that create the flavor are volatile, and they will continue to flow after the coffee beans are roasted. Volatile. When the aroma in the coffee beans/powder is exhausted, the aroma of coffee we use these beans to wash out is not so rich. What we taste from it is more water-soluble flavors, such as acid and bitterness... Therefore, in order to obtain the most complete flavor experience, many friends will strictly control the tasting time of a pack of coffee and strive to use it before the aroma is completely lost. So how long is the taste period for coffee beans after being ground into powder?

To know the answer to this question, we must first know the taste period of coffee beans! The taste period for coffee beans generally starts from the 3 to 7 days after roasting is completed, and the specific time needs to be determined according to the degree of roasting of the coffee beans. The deeper the roasting, the later the taste period will start, because the deeper the roasting, the more carbon dioxide it contains. Too much carbon dioxide will hinder the dissolution of flavor substances in hot water during drip extraction, which may easily make the brewed coffee less delicious. So we usually wait a few days until the carbon dioxide content in the beans is not so high that it affects the extraction, before we start brewing these beans, so that the "value" of the beans can be squeezed out more easily. It was also from this time that beans entered the taste appreciation period.

The taste period of coffee beans is usually about 45 days, and the specific time will be affected by the environment and method of storage. The less negative factors you are exposed to during storage (such as fresh air, light, calories, etc.), the longer the taste period of the coffee beans. The same is true for coffee powder. The taste period of coffee powder is generally about two-thirds of that of coffee beans. If the taste period of coffee beans is 45 days, then the taste period of coffee powder is about 30 days. Another experiment was repeated behind Front Street, which was to grind the Front Street Poquet rose summer in the bean list into powder after baking, sealed and divided into several portions, and then brewed and tasted at different time periods over the next month.

Finally, it was found that the flavor performance would be good in the first three weeks after grinding into powder. Although the flavor intensity decreased every day, the flavors of citrus, floral, berry, and oolong tea in rose summer were well expressed. By the 31st day, we could only taste the "coffee flavor" of the coffee itself, and the aroma was very faint. The aroma of coffee beans that were not ground into powder only began to weaken on the 45th day. Although such experiments are not rigorous enough, we can know that the approximate taste period of coffee beans after being ground into powder is about 30 days. The reason why the flavor loss rate of coffee beans after being ground into powder will be greatly accelerated is mainly because the surface area of coffee beans has expanded many times after being ground into powder, and the release path of aroma has been increased, so the speed of flavor loss will be accelerated.

Therefore, if the consumption rate is not so fast and the coffee powder cannot be consumed in a short time after choosing to substitute flour, it is best to find several sealable containers for sub-packaging and storage like Qianjie. Because we expose the coffee powder to new air every time we open it, and this new air will take away part of the aroma, open and close, and the taste period of the coffee powder will be further shortened.

In fact, it's easy to understand. I don't know if people have ever put the powder aside after grinding it. In just dozens of minutes, the aroma of freshly roasted and ground coffee powder has disappeared. This is the result of too much air exposure without sealing. Therefore, Qianjie recommends that if you are not drinking quickly, it is best to use some sealed bags and cans for sub-packaging. This can effectively prevent the loss of aroma and greatly extend the taste time of coffee powder.

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