Source : Heat Oil In A Wok Add Mustard Seeds And When Mustard Seeds Splutter Add Asafoetida And Saute For 1 Minute Now Add Urad And Chana Dal And Roast For 2 M...
Add onion and saute for 2 minutes. Then add chopped tomatoes and garlic and saute for 1 minute again. Switch off the flame. Let the mixture cool.
Now put it in the mixer. Add tamarind pulp and salt and grind to a fine paste. Add red chilli powder and churn again for 1 minute. Transfer it in a bowl.