Wash and soak dal and rice only for 1 hrs in slightly hot water.
Now in the mixture jar, add soaked dal-rice, green chilli, ginger, garlic, and water. grind it into a smooth batter.
Take out batter into mixing bowl and whisk batter for 2-3 minutes.
Then add turmeric powder, red chilli powder, besan (gram flour), some coriander leaves, grated onion, and some coriander leaves. mix well and add some water, if the batter is thick.
Heat a tawa and Lower the tawa temperature with water.
Pour a ladle full of batter. Spread it in a circular direction.
When the upper surface of chilla becomes dry then spread some oil on it.
Flip and cook it on another side.
Serve chilla and with sweet and sour raw mango chutney.