Yes. Peanuts in the shell last 4 months in the pantry and 24 months in the freezer. After that, or sooner if stored badly, they spoil: watch for the signs below.
How to tell if peanuts in the shell 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.
Peanuts in the shell past the expiration date
Best-by and sell-by
FoodKeeper gives unopened peanuts in the shell 4 months 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
Peanuts in the shell past their best-by date are usually safe if stored well; check smell, look and taste before using.
How to keep peanuts in the shell fresh longer
- Keep in a cool, dark place, tightly closed, away from heat.
- Refrigerating nuts, seeds and nut oils extends shelf life significantly.
- Smell before using; rancidity is a quality problem you can detect.