Mix rice flour, semolina and refined flour.
Add yoghurt and 3 cups of water. Mix well with the help of a whisker and let it rest for 15 minutes.
Meanwhile, chop onions, ginger, green chillies and coriander leaves.
Once the batter has rested, it will thicken a bit. Add one more cup of watr.
Add onions, ginger, green chillies, coriander leaves, curry leaves, salt, pepper and cumin seeds.
Mix well. If needed, add more water. The batter should be of a watery consistency.
Heat a pan. Using a brush, grease its surface.
When the pan is hot, drop the batter all over the pan. It will form a netted structure.
Put some oil in the gaps and along the edge of the dosa.
Reduce the heat to medium, and cook till the dosa browns a little.
Flip it, cook for about 15 seconds and remove. Serve hot.