Purani Haveli's known to be the place or origin of the square or char koni naan in Hyderabad. The place gets its name from the Haveli which was built for the Nizam of Hyderabad Sikander Jah III. It's located in the Old City of Hyderabad.
'Kala Burger Wala' is an institution. If you don't believe me, ask anyone in West Delhi.