- You should not freeze formula, whether it is pre-mixed or formula that you have mixed yourself. Freezing infant formula causes the fat to separate from the rest of the mixture. This separation negatively affects the texture and quality of the formula. Freezing the formula also will not extend its shelf life past the expiration date.
- Do not freeze formula, but be sure to keep it cool. Germs and bacteria can grow in room-temperature formula. Warm the formula only when you are going to feed your baby, not ahead of time. If you are traveling with your baby, keep the formula in an insulated bag with an ice pack.
- Do not reuse the formula that your baby has not eaten. After an hour, discard any leftover formula because the risk of bacterial contamination increases significantly.
- Unlike formula, you can freeze breast milk. If you do freeze breast milk, purchase appropriate containers or bags. Leave a small space at the top of the container because the milk will expand as it freezes. Freeze breast milk in small 2-oz. portions. Small amounts will thaw more quickly and help you avoid wasting too much.
- If you choose to make your own baby food, make large batches and freeze it in small convenient portions. Often, you will find that you will have to add liquid to the foods that you puree to make them thin enough for your baby to eat. If you choose to use formula to thin your baby's food, do not add the formula before you freeze it. Instead, freeze the food without the formula. Add the formula to thin the puree after you thaw a small portion for your baby to eat. Do not add the formula until you are ready to feed your baby.
