When infants are a few months old, milk can not satisfy their growth. It's time to prepare some assistant food.
First, it should be not allergic to babies. Many kinds of food are likely to cause infant allergy. Second, the food that is easy to digest is suitable for delicate intestines and stomach of infants. You can add some probiotic into the assistant food, as probiotic is beneficial to baby digestion and nutrient absorption. Third, it is rich in diversified nutrients, such as calcium, iron, zinc, and vitamins, etc. These nutrients are essential for infant growth.

According to these criteria, the best additional baby food is cereal. For example, you can prepare some rice flour rich in nutrition, for it is not easy to cause allergic reactions. Some baby cereal is made from large molecules into small molecules, which makes the cereal easy to absorb for babies.