The prominent ingredient in South Indian dishes is Rice, Lentils and Stews in the dishes like Dosa, Idli and Rasam mainly. http://flavorofsouthwala.populr.me/
There are more than 65 Million businesses on the Facebook and 4 million of them are running ads. Fb ads are the best of practices with the required elements like Headline, Image, Copy, Targeting and landing page. https://www.yogeshgaur.com/how-facebook-ads-can-generate-business