How Long Does Butter Last?
Quick Answer
Butter lasts 1-3 months when unopened. Once opened, it should be used within 1-2 months.
Shelf Life by Storage Condition
| Storage Condition | Duration |
|---|---|
| Pantry (Unopened) | 1-2 weeks |
| Pantry (Opened) | Not applicable |
| Refrigerator (Unopened) | 1-3 months |
| Refrigerator (Opened) | 1-2 months |
| Freezer | 6-9 months |
How to Tell If It Has Gone Bad
- Sour or rancid smell
- Discoloration or dark spots
- Mold growth
- Off or bitter taste
Proper Storage Tips
- Keep butter tightly wrapped or in an airtight container to prevent absorption of odors.
- Store butter in the refrigerator to extend shelf life.
- Freeze butter if you need to store it for longer than a few months.
Risks of Using Expired Butter
Consuming spoiled butter can lead to foodborne illness due to bacterial growth or mold contamination. Rancid butter may cause digestive discomfort and unpleasant taste but is unlikely to cause severe illness. It is best to discard butter showing signs of spoilage to avoid potential health risks.
Get an Expiration Reminder
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Frequently Asked Questions
How long does Butter last?
Unopened butter lasts 1-3 months in the refrigerator and up to 6-9 months in the freezer; opened butter lasts 1-2 months refrigerated.
Does Butter expire?
Yes, butter can expire and become rancid or moldy over time, especially if not stored properly.
How can you tell if Butter has gone bad?
Butter that has gone bad will have a sour or rancid smell, discoloration, mold, or an off taste.