Nobody has thought of hosting a Chennai Food Walk.
Street Food Walk would be easy to handle.
T. Nagar to Marina to Zam Bazaar to Sowcarpet and Mint. This is one route I'd suggest.
You could also think of 5 vintage food joints of the city to explore. Buharis on Mount Road, Ratna Cafe in Triplicane and a Gujarati Mess in Broadway is on top of my list. Would you like to add on and coax a foodie and diehard citizen to lead the tour?
Roll on, it is still not late foodies.