What happens to frozen breastmilk after it's been defrosted for 24 hours? Is it spoilt like its rotten or like its lost its nutritional value/benefits? I exclusively nurse my 7 month old, even while she's in daycare. Her infant teacher wants to give her breastmilk in a cup (about an oz a day) with "meals", but I don't ever have time to pump to have fresh milk for that. I have a small freezer stash for date nights/emergencies but they're not in 1oz portions. Can she use the defrosted stuff over a period of a few days since its not for nutrition?