1. Break idlis into crumbs using hand.

2. mix chanadhal powder with a tsp of oil with the idli crumbs

3. Chop onion and chilli into small pieces

4. Heat oil and add the chanadal, uraddal and mustard seeds. Fry till they turn golden in color. Add onion and chilli and saute. Add idli crumbs. If you're using chilli powder, add it now and mix gently for few seconds.

Serve hot with chutney.