Feeding your baby directly from the food jar can introduce bacteria from your baby's mouth to the spoon and into the food.
If you save and use leftover baby food, bacteria in leftovers can grow and may cause diarrhea, vomiting and other symptoms of foodborne illness.
To avoid problems, spoon small amounts of baby food from the jar into a dish and feed your child from there. If your baby is still hungry, take more from the jar with a clean spoon.
When you are finished feeding your child, close any open jars of baby food that haven't come in contact with your baby's saliva. They can stay safely refrigerated for up to 3 days.