Instead of sickness, you’ll get the “wilted flower” of hot beverages. Expired tea tastes flat, stale, and maybe a little like cardboard.
Do Teabags Go Bad? How to Tell if Your Tea Is Safe to Drink
The essential oils that make your Earl Grey taste like heaven have evaporated. You’re basically drinking leaf-scented hot water. Is it harmful? No. Is it a waste of a good mug? Definitely.
Some teas, especially green teas, can also turn a bit brown or cloudy. That’s just oxidation—not a poison. It’s like the tea’s version of a bad hair day.
The One Weird Exception
Okay, there’s one tiny caveat: if your tea has added ingredients like fruits, nuts, or milk powder. Those can go rancid.
If your “raspberry white tea” is a decade old and smells like old socks, trust your nose. Even then, it’s more about being gross than giving you a fever.
Plain black, green, white, or oolong tea? You could probably brew it on a desert island ten years from now and be fine. You’d just be very, very bored with the taste.