How Long Does Peanut Butter Last?
Quick Answer
Peanut Butter lasts 6-9 months when unopened. Once opened, it should be used within 2-3 months.
Shelf Life by Storage Condition
| Storage Condition | Duration |
|---|---|
| Pantry (Unopened) | 6-9 months |
| Pantry (Opened) | 2-3 months |
| Refrigerator (Unopened) | 9-12 months |
| Refrigerator (Opened) | 3-4 months |
| Freezer | Not applicable |
How to Tell If It Has Gone Bad
- Rancid or off smell
- Change in color or texture
- Mold growth on surface
- Unusual or sour taste
Proper Storage Tips
- Store unopened peanut butter in a cool, dry pantry away from direct sunlight.
- After opening, keep peanut butter tightly sealed to minimize exposure to air.
- Refrigerate natural peanut butter after opening to extend freshness and prevent oil separation.
Risks of Using Expired Peanut Butter
Consuming expired peanut butter can lead to ingestion of rancid oils, which may cause digestive discomfort or nausea. Mold growth on peanut butter can produce mycotoxins that pose health risks, especially for individuals with allergies or compromised immune systems.
Get an Expiration Reminder
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Frequently Asked Questions
How long does Peanut Butter last?
Unopened peanut butter lasts 6-9 months in the pantry, and opened peanut butter lasts 2-3 months at room temperature or 3-4 months refrigerated.
Does Peanut Butter expire?
Yes, peanut butter can expire and become rancid or moldy over time, especially after opening.
How can you tell if Peanut Butter has gone bad?
Signs include a rancid or off smell, mold growth, changes in color or texture, and an unusual or sour taste.