When the oil is hot enough add the Urad dhal and saute till golden brown
Add onion and chillies, saute till onions get transparent
Add tomato/tamarind and the leaves for few minutes till the raw smell goes.
Cool it for a few minutes and grind it with the required salt.
Splutter mustard with little urad dhal in oil to the Chutney for seasoning.
It tastes delicious with Idlis, Dosas, Chappathis and also for Rice...