The date says it’s good, but its smell says it has soured already.

The smell of spoiled milk is enough to send even those with stomachs of steel reeling.

But if the printed date on milk means best by, why did it spoil before then?

a gallon of milk in an empty fridge

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“Time and temperature abuse is the most common issue for any food spoilage,” she says.

Chef Rhonda Stewartis a senior instructor and associate professor at Johnson & Wales University’s Charlotte Campus.

Why Did My Milk Spoil Before The Expiration Date?

“Warmer temperatures promote bacterial growth, causing the milk to go bad,” she says.

What Does The Date On Milk Mean?

How Long Is Milk Good Past a Best By Date?

So, is it bad to drink expired milk?

Stewart says not necessarily.

Depending on the key in of milk, the extended window of safety varies.

It is best to smell the milk and look at its texture before consumption, Steward advises.

How Do You Know When Milk Has Gone Bad?

Stewart says that when milk spoils, there are several indicators, the first typically being a sour smell.