The most iconic restaurant in the southern Indian city of Bangalore is the 92-year-old MTR, or the Mavalli Tiffin Room. It's also the place that many say serves the "world's best dosa", writes the BBC's Geeta Pandey.

To find the origin of this popular dish we take off to MTR (Mavalli Tiffin Rooms), on Lalbagh Road, which is associated with the dish for years.

In all these years, MTR’s aim has been to serve “good food consistently” to customers and for which customers return.