What does the line 'if the state of Mysore is to bharatavarsha what the sweet karigadabu is to festive meal, then hosahalli is to Mysore state what the filling isto the karigadabu

Masti blames the local cartographer for not including Hosahalli in India’s map. He equals Mysore and India on one hand and Karigadabu and its filling on the other. He says that  Karigadabu is not possible without its coconut-sugar filling. Similarly, Hosahalli is as much important a place in Mysore State as a filling serves Karigadabu.