I would recommend you to have their authentic cold coffee. Yeah sounds normal but it is simple delicious. Strolling in Janpath is incomplete without stopping here. Its got snacks and some nicely flavoured and uniquely bottled cold coffee.
They are serving there customers from last 68 years. This shop covers multiple varieties of Milk shakes, cold coffee, Sandwiches, kulchas, Burger, patties and kathi rolls are only delicacies you will probably not find anywhere else in janpath market. The shop gets about 200-400 customers in a day. Highly highly recommended to everyone.