What Did Vedic People Eat ? Indus Sarasvati Harappa Food

During my professional Life, I have covered India extensively and had partaken food with the local people in Kashmir,Punjab,Bengal,Odisha, Gujarat, MP, UP , not to mention the southern states. What struck me was the essential food habits are the same, right from offering water first to the householder eating later. Major difference is that in the Northern States Wheat is consumed in place of Rice. (Rice is consumed more in the Southern States of Kerala, Tamil Nadu,Karnataka, Andhra,and in th East Bengal and Odisha.) Yet for Religious ceremonies Rice is being used and the vegetables that are used all over the country for important ceremonies like Sraddha remain the same.