The storage time of Pu'er tea is relatively long, but longer is not always better. Pu'er tea will have a stale taste after being stored for more than seven years.

Pu'er tea is fermented tea. After being stored for a long time, the quality of Pu'er tea will become warm and mellow, with a typical aged aroma. Therefore, people think that the older the Pu'er tea is, the better it becomes.

The "aging" of Pu'er tea during the storage process is the oxidation, degradation and transformation of the chemical components in the tea, and the auto-oxidation of polyphenolic compounds, amino acids, and sugars, forming theabrownin and yellowish brown. Polymers, etc.; the oxidation of ester compounds produces volatile components such as 2,4-heptadienal, which have the odor characteristics of old tea, causing changes in taste, soup color and aroma.

Extended information

Storage conditions of Pu'er tea:

1. The raw materials and technology of Pu'er tea itself should be good. If it is poor quality Pu'er tea, it will need to be stored for a long time. It won't get better for a long time.

2. In a clean, ventilated, light-proof, dry, and odor-free warehouse, there should be no odor gas pollution around the warehouse.

3. A certain amount of tea contains only so many substances. During the storage process, substances are transformed, volatilized and consumed. It is necessary to grasp the "best drinking period" of Pu'er tea.

4. When the seasonal humidity deviates from the appropriate standard, it is necessary to carry out some work to provide subsidies. For rooms with large amounts of tea, it is necessary to purchase dehumidifiers and humidifiers.

Baidu Encyclopedia-Pu'er Tea