The feeding the first 4 months of baby will be only constituted of milk containing all that the new-born baby needs.
As from 4 months when food diversification will slowly begin with introduction of two or three spoons stewed fruit very finely mixed (that is barely the half of a small pot) which infant will take in the snack with a nursing bottle of milk (or one suckled) as a supplement. The purée of vegetables will come then very progressively which will replace lunch (breakfast and meal of the remaining evening one suckled or a nursing bottle of milk).
Feeding in the breast or in the nursing bottle, first true meals, you will find a wide range of products to accompany the growth of your baby.