Este tópico está presentemente marcado como "adormecido"—a última mensagem tem mais de 90 dias. Pode acordar o tópico publicando uma resposta.
Do whatever you feel like and don't feel bad about keeping the tea longer than a year.
Rolled and fermented teas also have longer shelf life. For all teas, shelf life can be extended through proper storage.
It seems for many teas (except green), a usage of up to 3 years seems reasonable.
In China, I receive a lot of tea as gifts. The gifts also often consist of large quantities. I pass the cheaper teas on to my Chinese colleagues or the compost heap.
I drink most teas including greens up to 3 years before tossing them. It also depends on the taste.
If I buy teabags (which I try to avoid), and they are not in individual foil wrappers, I put them in an airtight caddy, ziploc bag, or equivalent.
Good point on the tea bags, Osbaldistone.
I asked Whittard's saleslady this summer about the expiration and she told me they can stay up to a year but it entirely depends on their freshness. If the pack is sealed, there's a good chance the tea will retain its freshness; however, if you open it and the smell is gone then that's an indication it has expired (or something like that).