how long is green tea good for after expiration
Loose green tea is a perishable product. The rule of thumb is that green tea turns hay after 6 months. If you want to keep it fresh - keep it in the cooler (4-5C/40F) in zip-locked package. Green tea easily absorbs any flavors, so if you don't want your lovely Bi Luo Chun smell like salami, keep it zipped. The only exception to 6 months expiration is vacuum. If you vacuum your green tea and put it in the fridge you can prolong its life for as long as 2-3 years. All of the above is true for good quality tea carefully produced by responsible farmers.