The "expiration" of milk is more accurately described as how long it remains fresh after the date printed on the carton, which varies depending on the type of milk and how it's stored.
Here's a breakdown of how long different types of milk typically last past the printed date, assuming they are unopened and refrigerated:
- Whole Milk: Lasts approximately 5-7 days past the printed date.
- Reduced-Fat and Skim Milk: Lasts around 7 days past the printed date.
- Non-Fat and Lactose-Free Milk: Lasts approximately 7-10 days past the printed date.
Important Considerations:
- Opened Milk: Once opened, milk should be consumed within 4-7 days, regardless of the date on the carton.
- Refrigeration is Key: Always store milk in the refrigerator at a temperature between 32°F (0°C) and 40°F (4°C). Temperature fluctuations can significantly shorten its lifespan.
- Signs of Spoiled Milk: Look for these signs to determine if milk has gone bad:
- Sour odor
- Lumpy texture
- Discoloration
It's always best to trust your senses. If the milk smells or looks questionable, it's safer to discard it.
