Take ragi flour, rava and rice flour together. Mix is well with curd and water and leave it aside for 10 minutes.
Now blend together ginger, garlic, green chillies, curry leaves and coconut in a blender.
Add this to the millet mix.
Before starting to prepare dosas, add the finely chopped onion, dill leaves and coriander leaves. Thin down the batter which must have become thicker by now.
It must be of a runny consistency just like rava dosa batter.
Heat a tava/griddle/pan.
Smear oil. When the pan is hot, spread out the batter to form a thin crust on the tava.
Sprinkle some more oil on top.
Cover and cook on medium high flame till the bottom is crispy.
You don't need to cook it on both sides.
It should look completely brown like chocolate.
Now take it out and serve hot with chutney or sambar. It is crispy and tasty.