1. Milk and butter
In the U.S., the date on a carton of milk can vary depending on which state you’re in. And how it has been kept since you got it home from the store will be a big factor in its longevity, too. For instance, keeping the product in a fridge running at a lower temperature than the typical 40 degrees Fahrenheit will extend its life. But if the milk is near or past its expiry, give it a sniff and decide yourself.
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