Dry roast ½ cup of thinai arisi for about 3 mins.
Heat oil in a pan and add mustard seeds, Urad dal, Green chilli, Curry leaves to temper.
Add onions and fry it for a while.
Add a glass of water and bring it to a boil.
Now add Thinai Arisi and keep stirring over low flame for about 10 minutes.