Mix all the dals and soak them for 4 hours.
Soak the rice separately for 3 hours.
Mix both of them and grind along with add green chili, Red chili, salt prepare the batter just like dosa batter.
Add Hing, chopped onions, Curry leaves to the batter and mix completely.
Then keep a pan on stove add oil then add batter and roast both the sides just like dosa.