I don't think tea can be drunk after its shelf life. Some families don't make tea very often, so they often store tea. However, tea has a shelf life and cannot be stored for too long. If you drink bad tea, it may be harmful to your health.

Usually, the shelf life of tea in sealed package is 12 months to 24 months, and the tea package will be marked. Bulk tea has a shorter shelf life. When buying, try to choose the new tea of that year.

At the same time, it depends on the degree of tea fermentation. Pu 'er tea is fully fermented, of course, the longer it is kept, the better it tastes. Tieguanyin is a semi-fermented tea, and its shelf life cannot be preserved like Pu 'er tea. If you want to drink it for a long time, I suggest you put the sealed tea leaves in the refrigerator. So it can be kept for a long time. Does not affect the taste.

The shelf life of tea is related to the variety of tea, and the shelf life of different teas is different. Pu 'er tea and black tea are both fermented products, and the shelf life can reach 10~20 years. Therefore, the country has not set a shelf life for it. Similar teas include Wuyi Rock Tea and Liubao Tea in Guangxi. As long as these teas are properly stored, they will not deteriorate, but will improve the quality of tea.

Fresh is better for ordinary tea. Such as green tea, the shelf life at room temperature is generally about one year. But the main factors affecting the quality of tea are temperature, light and humidity. If these factors are reduced or eliminated by correct storage methods, the quality of tea can be guaranteed for a long time. To judge whether the tea has expired, there are mainly the following aspects: (1) to see whether it is moldy or 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.

The shelf life of green tea is about one year. Because it has not been fermented in the production process, it is very easy to deteriorate during storage, so it is not suitable for long-term drinking. The shelf life of black tea is not more than three years. If you buy black tea in bulk, the shelf life will be shorter. Try to finish it in two years. The shelf life of white tea ranges from one year to seven years.