In a mixing bowl , add rava , rice flour and refined flour.
Add in green chillies , ginger , cumin seeds , crushed black peppercorns , curry leaves , coriander leaves ,salt and pinch of sugar.
Mix well everything .
Add 2-3 tablespoon of curds and 2 cups of water or else you can also add butter milk.
Add finely chopped onions, whisk well . Let batter rest for minimum 20 minutes.
After resting time , add remaining 1.5 cups of water ,mix well everything from bottom . As rava tends to settle down at bottom , adjust remaining water while pouring dosa in next batches.
On a hot non stick tawa/ cast iron griddle and pour a ladle full of batter from outside to inner side, fill in the large holes.
Drizzle some oil / ghee on top of dosa and cook on a low- medium heat ,slowly .
Once the base looks firm and turns golden brown , remove dosa from corners , fold and serve it straight , accompanied with tomato chutney and coconut chutney.