Soak urad dal for 5-6 hours. Soak cream of wheat in butter-milk for 2 to 3 hours.
Grind urad dal and mix in the cream of wheat.
Add all-purpose flour or rice flour to make soft batter.
Heat a pan. Sprinkle water. Keep the heat slow. Add 1 tsp. ful of the batter and quickly spread into thin dosa.
Sprinkle a little chopped chilies on top. Add oil. Turn the heat to medium. Roast on both the sides. Serve with chutney and sambhar.
Masala rava dosa can be prepared by adding vegetable of masala dosa.