How long does baking powder last?
Unopened, it keeps in the cupboard for about 12 months. Once opened, in the cupboard for about 3 months.
This refers to: Baking powder (sachet or tin).
Shelf life of baking powder at a glance
| Storage | Unopened | Opened |
|---|---|---|
| Cupboard | 12 months | 3 months |
Old baking powder is not unsafe, it just loses its rising power. Keep it dry and tightly closed.
Past its date does not mean spoiled
These are guide values for food stored correctly. A best-before date is not a throw-away date: many products are still fine after it. Check how it looks, smells and tastes. Mould, an unusual smell or a bulging can are reasons to throw it away. A use-by date is different: do not eat the food after it.