according to current practice a baby is to be fed exclusively on mother's milk for 1 year,because she gets the resistance & imunity through it. If it's not possible please breast feed
atleast 6 months.
After you can add thick liquid,semisolid &solid food to your baby step by step.
, wheat , powder (made after roasting) can be given in form of "Kheer"(custerd) ,boiled egg,potato,cooked apples,fruit juices,veg.soups can be few options.
Always prefer fresh &home made food for your baby rather than readymade formula baby foods.