okipoki,
read below:
http://www.wholesomebabyfood.com/pureestore.htm
Storing Baby Food Pure in the Refrigerator
It is recommended that fresh pureed homemade baby food be stored no longer than 48 hours (many food safety authorities say that 72 hour is fine!) in the refrigerator. This limit ensures that bacteria growth in the puree is kept to a minimum and that the food does not take on the "taste of the fridge"! This "rule" applies for veggies, fruits, meats etc.
If you do not plan to freeze your homemade baby food, we would suggest that you make the puree on a day to day, or every other day, basis. For example, one sweet potato may be baked and then you may freeze one half without pureeing it and then puree the other half. This method will help cut down "waste" and also allow for food safety.
Experts say that it takes an infant between 15-21 instances of trying a food before a true like or dislike is established. If you are just beginning to introduce solid foods, you really will not be able to determine if your baby has a true dislike for a food until much later. Freezing pures allows you to go back and try a "rejected" food over again. Even if you will be strictly following the 3-4 day wait rule, we still recommend freezing baby food purees for
optimal food safety!
What is the Best Way to Re-Heat or Thaw the Baby Food Pure?**
If you are using a microwave to thaw or reheat baby food cubes, be sure to stir food to ensure no hot-pockets are left to burn baby!
If you do not wish to use a microwave to thaw your baby food cubes, you may thaw your baby food cubes in the refrigerator over night (ensure that the cubes remain a closed container and not in an uncovered bowl).
You may also place the cubes in a small bowl and then place the bowl in a larger bowl filled with hot water. Thawing baby food cubes using this "submersion method" should take between 10-20 minutes.
Thawing food on your kitchen counter is never recommended as bacteria or other contaminants may get into the food.
**Please keep in mind that reheating baby food cubes is NOT necessary. Baby food cubes may be served at room temperature once they have been thawed!