Unopened tamarind paste will last longer in the space of 3 to 5 years, before going bad. If you store them properly in the right conditions necessary. Unopened tamarind paste lasts with its manufacturer's expiration date.

How can you tell if tamarind paste is bad?

How can you tell if tamarind nectar is bad? If tamarind nectar develops an off odor, flavor or appearance, or if mold appears, it should be discarded. Discard all tamarind nectar from cans or bottles that are leaking, rusting, bulging or severely dented.

How long does tamarind paste keep once opened?

This paste should last for at least 6 months in the refrigerator. Alternatively, you can place the paste into ice-cube trays and freeze them.