Unopened yogurt is typically good for 1 to 2 weeks after the purchase date, provided it has been continuously refrigerated.
Yogurt Shelf Life: Understanding the Basics
Yogurt's shelf life is a crucial aspect to consider for food safety. Understanding when yogurt is still safe to consume is essential to avoid foodborne illnesses. According to the USDA's Food Safety and Inspection Service Foodkeeper app, unopened yogurt should be consumed within the following timeframe:
- Refrigerated Yogurt: 1 to 2 weeks from the purchase date.
Factors Affecting Yogurt Shelf Life
While the timeframe above serves as a general guideline, several factors can influence how long your yogurt remains safe to eat:
- Storage Temperature: Maintaining a consistent refrigerated temperature is paramount. Fluctuations in temperature can accelerate spoilage.
- Purchase Date: Always consider the purchase date when assessing yogurt's freshness.
- Packaging: Intact packaging helps maintain freshness. Damaged or opened containers can lead to faster spoilage.
Signs of Spoiled Yogurt
After the recommended timeframe, or if you suspect that your yogurt has not been stored properly, look for the following signs that indicate spoilage:
- Visible Mold: Any mold growth is a clear sign that the yogurt should be discarded.
- Unusual Odor: A sour or off-putting smell is a warning sign.
- Changed Texture: If the yogurt appears curdled or has separated in an unusual way, it may be spoiled.
- Bloated Container: A bulging or bloated container indicates bacterial growth and the yogurt should be thrown away.
Important Notes
- The recommended timeframe for consuming yogurt is based on the purchase date, not the date printed on the container which is often a "sell-by" date.
- Always refrigerate yogurt promptly after purchase to maintain its quality and safety.
- It's best to err on the side of caution; if you're unsure about the freshness of your yogurt, it's safer to discard it.
