Tea is the same as other foods. Under the premise of humidity, some hidden substances, including bacteria, will multiply on tea. At this time, some changes will take place in tea, and the most common change is mildew. Therefore, if the tea leaves are accidentally exposed to the air after being stored for a period of time, the tea leaves will absorb water, and in this case, the shelf life of the tea leaves will be greatly shortened. Therefore, if you want to keep tea for a long time, you must do a good job in the storage of tea, especially the waterproof work of tea.
Narcissus tea belongs to oolong tea, so its shelf life is not long. Generally speaking, it will be stored in the refrigerator for about 18 months, so when you drink it, you should pay attention to finish it within the shelf life. Don't buy too much at a time to avoid the expiration of the drink. In short, the preservation method of daffodil tea is relatively simple and easy to learn, and it is best to buy and drink it when buying tea, so that the taste of tea is the best. Even if the tea leaves are completely sealed, there will be some reactions. For example, tea polyphenols and theaflavins in tea will decompose some substances in tea in the presence of air, which will greatly reduce the taste of tea.
It is this that people can distinguish what is new tea and what is old tea by tasting tea. In the process of tea oxidation, it gradually becomes a discounted product, which is also an important part of tea deterioration. Naturally, you can't continue to drink expired tea, otherwise it will easily cause unnecessary effects on your body. Because the expired Zhangping daffodil tea has exceeded the shelf life, it will be easily affected by mildew and bacteria, resulting in a lot of bacteria in tea. Drinking this kind of tea is easy to upset the stomach, abdominal pain and diarrhea.