Personally, I shop at supermarkets, department stores, and grocery stores with StanC Manhattan. It offers 5% Cashback on transactions up to Rs. 150 each day. 750 rupees per month maximum, then rewards
AU Zenith - 5% on restaurants and dining, 2.5% on grocery and departmental. You can also get AU Zenith LTF if your employer is there in corporate list of AU and if you meet other eligibility criteria.