How Long Does Walnuts Last?
Quick Answer
Walnuts lasts 6-12 months when unopened. Once opened, it should be used within 3-6 months.
Shelf Life by Storage Condition
| Storage Condition | Duration |
|---|---|
| Pantry (Unopened) | 6 months |
| Pantry (Opened) | 1-2 months |
| Refrigerator (Unopened) | 12 months |
| Refrigerator (Opened) | 6 months |
| Freezer | 12 months or more |
How to Tell If It Has Gone Bad
- Rancid or bitter smell
- Off or sour taste
- Discoloration or dark spots
- Mold growth
Proper Storage Tips
- Store walnuts in an airtight container to prevent exposure to air and moisture.
- Keep walnuts refrigerated or frozen to extend shelf life and maintain freshness.
- Avoid storing walnuts near strong-smelling foods as they can absorb odors.
Risks of Using Expired Walnuts
Consuming expired walnuts can lead to ingestion of rancid oils which may cause digestive discomfort and unpleasant taste. Mold growth on walnuts can produce mycotoxins, which pose health risks including allergic reactions and food poisoning.
Get an Expiration Reminder
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Frequently Asked Questions
How long does Walnuts last?
Unopened walnuts last about 6-12 months in the pantry and up to 12 months refrigerated or frozen. Once opened, they last 1-2 months in the pantry and 3-6 months refrigerated.
Does Walnuts expire?
Yes, walnuts can expire and become rancid or moldy over time, especially if not stored properly.
How can you tell if Walnuts has gone bad?
Walnuts that have gone bad will have a rancid or bitter smell, off taste, discoloration, or visible mold.