In a bowl, take ½ cup of rava (sooji or semolina), ½ cup of rice flour, and ¼ cup of refined wheat flour (maida). Then, add 1 tbsp of finely chopped fresh curry leaves, 1 tsp of green chilies, 1 tbsp of ginger, and 1 large piece of onion.
Follow it up with 3 tsp of yogurt (Dahi), ½ tsp of cumin seeds (jeera), and ½ tsp of salt. Mix everything nicely first.
Then add 1 cup of water. Mix everything to get a relatively thick batter.
Cover the bowl and keep it aside for 10 minutes or so to rest. After 10 minutes, add more water to the batter and mix well to achieve a free-flowing consistency.
Now, heat a tawa over a medium flame. Sprinkle a little bit of cooking oil or ghee (clarified butter) when hot and rub it with a piece of half-onion all over the surface.
Now, pour a ladle of batter on the edge of the tawa first and then in the center. Then, tilt the tawa on all sides so that the batter spreads evenly on the surface. Do not spread the batter as it is done while making a traditional dosa using the bottom of a ladle or bowl.
Pour some cooking oil or ghee at the edges and on the surface of the dosa. Let it cook for about half a minute or so over a low to medium flame. Move the tawa to ensure even distribution of heat and cooking.
Check for doneness of the bottom of the dosa. Flip it to cook the other side. Fold and remove the dosa from the tawa when done. Repeat the process to fry all the dosas.
Your tasty and crispy homemade rava dosa is ready to enjoy. Serve it along with sambar and coconut chutney.