Paytm Mall hopes to take on Amazon India, which gets more than 50 per cent of its daily grocery orders and is running a number of programmes, including Amazon Pantry and Amazon Now, its two-hour grocery delivery service. “The biggest learning that I have got is that grocery is the fastest growing category in e-commerce. The consumers come back again. We have a daily needs section in Paytm Mall for that reason. At present level, around 25 per cent of the GMV at Paytm Mall comes from grocery; it will go up to 40 per cent. I think groceries would contribute around $3-billion GMV by end of the year,” Sharma had earlier said.