How Long Does Buttermilk Last?
Quick Answer
Buttermilk lasts 2-3 weeks past printed date when refrigerated when unopened. Once opened, it should be used within 7-10 days when refrigerated.
Shelf Life by Storage Condition
| Storage Condition | Duration |
|---|---|
| Pantry (Unopened) | Not applicable |
| Pantry (Opened) | Not applicable |
| Refrigerator (Unopened) | 2-3 weeks past printed date |
| Refrigerator (Opened) | 7-10 days |
| Freezer | Up to 3 months (texture may change) |
How to Tell If It Has Gone Bad
- Sour or off smell stronger than normal tang
- Lumpy or curdled texture
- Discoloration or mold growth
- Unpleasant or off taste
Proper Storage Tips
- Keep buttermilk refrigerated at or below 40°F (4°C) at all times
- Seal container tightly after each use to prevent contamination
- Do not leave buttermilk out at room temperature for more than 2 hours
Risks of Using Expired Buttermilk
Consuming spoiled buttermilk can lead to foodborne illness symptoms such as stomach cramps, nausea, vomiting, and diarrhea. The presence of harmful bacteria or mold can pose health risks, especially for vulnerable populations such as young children, elderly, or immunocompromised individuals.
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Frequently Asked Questions
How long does Buttermilk last?
Unopened buttermilk lasts 2-3 weeks past the printed date when refrigerated, and opened buttermilk lasts 7-10 days in the refrigerator.
Does Buttermilk expire?
Yes, buttermilk can expire and should be consumed before the printed date or within 7-10 days after opening if refrigerated.
How can you tell if Buttermilk has gone bad?
Signs include a strong sour or off smell, lumpy or curdled texture, discoloration, mold growth, and an unpleasant taste.