This place serves pretty standard North Indian food and has the usual lunch buffet as well. I don't like buffets, but they didn't give me the option of ordering off the of menu, unfortunately.
The two vegan dishes in the buffet, the mixed vegetable curry, and the aloo methi (potato-fenugreek) were pretty solid dishes, however: not too oily and nicely spiced. Also, you don't see fenugreek often at Indian restaurants (unless it's buried in a seasoning).
If Coriander offered brown rice and some tofu or seitan dishes, it would warrant another star.