Once opened, Peanut butter (natural) keeps about 3–4 months in the fridge. Unopened, it keeps about 12 months.
| Situation | Keeps for |
|---|---|
| Unopened · fridge | 12 months |
| Opened · fridge | 3–4 months |
About 3–4 months refrigerated at 40°F (4°C) or below, according to USDA FoodKeeper v128. Refrigerate it once it's open.
Yes — keep Peanut butter (natural) at 40°F (4°C) or below once it's open. Refrigerate at 40°F (4°C) or below.
Look for: A rancid, paint-like, or musty smell; Bulging, leaking, deeply dented, or rusted cans; Insects or webbing in dry goods; Mould or discoloration. Never taste something to test it — when in doubt, throw it out.