On 43rd and 6th in NY their is a Indian guy selling Biryani (
http://en.wikipedia.org/wiki/Biryani) at 6$ out of the cart and I always make a point of stopping by and getting a package every time I am in NY...the guy makes it the same way they do it in India.
He said he sells around 1000 a day mostly to the Cab drivers. Also its not a cart he is on, it more looks like a mini house.
Jay