If you don’t get around to using the milk within a month, don’t worry! You can safely freeze milk for up to 4 months.
This works best for cartons of milk that are smaller than 1⁄2 gallon (1. 9 L) in size. If you’re trying to defrost 1 gallon (3. 8 L) of milk, it may take a few hours using this method.
When you microwave the milk, you’re heating it up, which helps bacteria grow. Plan on drinking or using the milk right away instead of leaving it out at room temperature or sticking it back in the fridge.
Drink the milk quickly after you do this since the milk fat will separate again as it sits.
You can only freeze milk once so use it or pitch it after you’ve thawed it.
You can also use the thawed milk in smoothies or milkshakes.