Urad Dal 1 cup
Rice 2 1/2- 3 cups
Salt to taste
Oil as required
Method of preparation:
Soak rice and urad dal separately in water for 4-6 hrs.
Grind rice and urad dal into smooth paste adding water if needed.
Mix both rice and urad dal pastes to form dosa batter.
Leave the dosa batter overnight to ferment.
To the above fermented batter, add salt and water if required to obtain the consistency which is not too thick or thin.
Heat a griddle on high flame, spread a tsp of oil to cover the whole griddle.
When griddle gets smoking hot, pour a ladle full of dosa batter on it and spread with the bottom of ladle in spiral motion to form a circular and thin dosa.
When the bottom side of dosa gets golden brown, turn on other side for few more seconds.
Fill the dosa with potato filling and serve hot with any chutney.
Notes: You can also add 2 cups of rice flour to urad dal paste and leave it to ferment overnight.