It’s a date
Breast milk can be saved up to six hours at room temperature, five days in the refrig- erator, and up to six months in the freezer. Once you’ve thawed frozen milk, it’s good at room temperature for up to four hours and should not be refrozen.
Mix it up
Don’t worry if your milk separates while stored; it’s normal for cream to rise to the top. To blend the layers, simply swirl the bottle once the milk has been warmed. (To bring milk to body temperature, hold it under running water or place in a bowl of warm water for 20 minutes.)