Pistachios Per USDA FoodKeeper
On the counterCounter
3 weeks
cool, dry place
In the fridgeFridge
12 months
at or below 40°F (4°C)
In the freezerFreezer
24 months
at 0°F; quality, not safety
Quick answer
Yes. Pistachios last 12 months in the fridge and 24 months in the freezer. After that, or sooner if stored badly, they spoil: watch for the signs below.
How to tell if pistachios are bad
Smell
Rancid: like crayons, paint or old nuts.
Taste
Bitter or soapy aftertaste.
Texture
Sticky or gummy residue around the lid.
Colour
Darkened or cloudy where it should be clear.
Pistachios past the expiration date
Best-by and sell-by
FoodKeeper gives unopened pistachios 3 weeks in the pantry or 12 months in the fridge, counted from the day you buy it. "Best-by" and "sell-by" describe quality and stock rotation, not safety; only infant formula carries a federally required use-by date.
Past the date
Pistachios past their best-by date are usually safe if stored well; check smell, look and taste before using.
How to keep pistachios fresh longer
- Refrigeration of this item provides no benefit.
- Freezing of this item provides no benefit.
- Keep in a cool, dark place, tightly closed, away from heat.
More about pistachios
FAQ
How long does it take for pistachios to go bad?
12 months in the fridge, per USDA FoodKeeper.
Can pistachios expire?
FoodKeeper gives unopened pistachios 3 weeks in the pantry or 12 months in the fridge, counted from the day you buy it. "Best-by" and "sell-by" describe quality and stock rotation, not safety; only infant formula carries a federally required use-by date.
What happens if you eat bad pistachios?
Usually an unpleasant taste rather than illness, but discard anything mouldy, rancid or smelling off.
How do you keep pistachios from going bad?
Refrigeration of this item provides no benefit.
Numbers on this page come from USDA FoodKeeper and FSIS guidance. Last verified November 2026. How we verify our data · Report a wrong number