A major component of maintaining the advanced societies of the ancient Indus River Valley may have been their development of dairy farming. Recent isotope analysis of lipid residues from ceramics at Kotada Bhadli show that dairy products were common by around 2,500 BCE.
This is the earliest evidence of dairy products in India. Domesticated cows and water buffalo can produce surplus milk and cheese, enriching the nutrition of the locals. And what the locals did not eat, they could have exchanged with other cities,