The shelf life of tea varies depending on the type of tea and how it is stored.

First of all, the type of tea has an important impact on its shelf life. Generally speaking, green tea, yellow tea and black tea have a shorter shelf life, usually between 12 months and 24 months. Oolong tea, black tea and white tea have a longer shelf life, which can reach 36 months or even longer. In addition, factors that affect the shelf life of tea include the way the tea is packaged. Generally speaking, sealed packaged tea leaves have a longer shelf life, while loose tea leaves have a relatively shorter shelf life.

Secondly, the storage method also has an important impact on the shelf life of tea. If tea is stored in a humid environment, it will easily become damp and moldy, thus affecting its shelf life. Therefore, when preserving tea leaves, they should be placed in a dry, ventilated, and dark place, and avoid contact with odorous items.

In summary, the shelf life of tea varies depending on the type of tea and the way it is stored. Generally speaking, green tea, yellow tea and black tea have a shorter shelf life, while oolong tea, black tea and white tea have a longer shelf life. When preserving tea leaves, they should be placed in a dry, ventilated, and dark place, and avoid contact with odorous items. If the tea leaves are expired or spoiled, you should not drink them to avoid affecting your health.