1. Cut the onions into thin slices.
2. Add salt and rub nicely into the onions.
3. Now add the besan, chilli powder, greenchilli paste and mix.
4. Add min water possible (adding salt to the onions in the beginning gives some water in the onions).
5. Take 1 tbsp of the mix and drop in hot oil. Fry till brown.
6. Serve hot with ketchup or any chutney.