Heat 2 tblspn of oil in a kadai. Add in urad dal and channa dal, fry them for a min.

Add in dry red chilli and garlic, fry them for couple of mins till they turn golden. Once they turn golden, drain them in a plate.

Now in the same oil, add in chopped onions and some salt. Saute them for 5 mins till they turn transparent.

Now take the fried dal mix and onions in a blender. Add in tamarind and some more salt to taste and puree them finely,

Pour them to a bowl.

Make seasoning, by heating a teaspoon of oil, add in mustard, urad dal and curry leaves. Saute them for a mins.

Pour this over the chutney and mix well.

Serve with idly or dosa.