Yogurt can often be eaten past its expiration date if it has been properly stored and remains unopened, because the “Best if Used By” date typically reflects quality rather than safety[5]. Eating yogurt shortly after this date is generally considered safe, especially if the container is intact and refrigeration standards have been maintained[3]. However, the USDA recommends consuming yogurt within 1–2 weeks of purchase, and after that period, safety cannot be guaranteed[1].
The most reliable method for deciding if yogurt is still good is to check for signs of spoilage:
- Appearance: Discard yogurt with visible mold, discoloration, or unusual clumping or curdling. Some liquid separation is normal, but excessive liquid or strange colors indicate spoilage[2][5].
- Smell: If yogurt smells sour or off, it should not be eaten even if it’s within the date range[2][5].
- Taste: If yogurt passes the look and smell test, you can try a small taste. An unpleasantly sour or strange flavor signals spoilage[5].
For opened yogurt or varieties with fruit on the bottom, the risk of spoilage increases. Opened yogurt generally lasts about one week past the printed date if kept cold, but dipping used utensils into the container can hasten spoilage[4]. Yogurt with fruit or mix-ins is more prone to mold and should be discarded when expired[4].
Importantly, you cannot rely solely on taste or smell to rule out foodborne pathogens, as some dangerous germs are undetectable[1]. If in doubt, it’s safest to throw the yogurt away. Never eat yogurt left out at room temperature for more than two hours, as this creates favorable conditions for harmful bacteria[3].
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