Soak Samai Rice and Urad dal for 2 hours, drain the water and grind it along with oats using some water.
Now add the batter (samai rice + Urad Dal +Oats) into a wide bowl.
Add the flours - Bajra, Ragi, Rice together with salt to taste.
Mix well and add water to adjust batter consistency.
Rest this batter for 30 minutes and then proceed to make the dosas.
For making the dosa - Heat a griddle, season it with a drop of oil.
Carefully pour a ladle of batter on the griddle and gently spread the batter. Pour oil on all the sides and allow it to cook over medium flame.
Flip the dosas and repeat the process of adding some oil. Serve hot with chutney.