How to tell whether tea has passed the shelf life?

Judge whether the tea has expired: see if it is moldy and stale; Will green tea turn red and soup turn brown and dark? The concentration, astringency and freshness of the taste are reduced, and the shelf life on the package depends on it. If it is bulk tea, it is best not to drink it for more than 18 months.

Most people think that bulk tea can clearly see the shape of green tea and judge the quality of tea, so most people like to buy bulk tea. In fact, bulk tea is constantly deteriorating in the process of sales, because exposure to the air, one is moisture absorption, the other is odor absorption, leading to intangible qualitative change of tea, making it lose its original tea fragrance. Compared with bulk tea, packaged tea has many advantages, for example, it is not easy to be polluted and deteriorated, and the standardized product packaging has clear grades, production dates, factory names, factory addresses, production standards and so on. Once consumers find quality problems, it is easy to complain.