The best in Chennai is
Address: 74, Cathedral Road, Gopalapuram, Chennai,Tamil Nadu 600086, India
Phone:+91 44 2811 5770
Monday 12:00 – 3:00 pm, 7:00 – 11:30 pm.
We have been to this place several times and they never disappointed us. Food is authentic north Indian( being a north Indian I can vouch for that) and servings are also good.It is a pure vegetarian restaurant. They have opened a branch at Taramani too.
We have tried many other places also, but they are not consistent in quality and some serve very little quantity, others are too expensive and still not that yummy food with good service.