Tea has its own expiration date, like other beverages, and because of this tea can become expired, losing its natural aroma and taste as the natural oils in the tea leaves evaporate with time. When stored properly in a freezer, tea can last up to 2 years past its expiration date.
It is important to consume foods and beverages, including tea, before their expiration date in order to avoid foodborne illness. Tea should always be stored in a pantry or freezer in order to maintain its flavor and aroma for the maximum amount of time. Even when tea starts to lose its flavor, a fresh pot can be made by simply adding more tea bags to the water.
When tea is prepared, it should be stored in a tightly-closed container in the refrigerator. This keeps moisture and contaminants from compromising the beverage. Once placed in the refrigerator, prepared tea lasts for around 5 days. If the prepared tea is frozen, it can last up to 8 months. As a general rule of thumb, though, prepared tea lasts as long as the ingredient that expires the quickest. For instance, if tea is made with lemon, it may expire more quickly.