Make kara masala:

Heat 2 tblspn oil in a kadai and add in onions,cook for 1 min...

Add in coriander seeds and red chilli mix well..

Now add in coconut and fry that for 5 mins or until golden..

Add in tomato and mix well...

Take this in blender and make into a fine puree..Set this aside for a moment..

Make kulambu:

Now add in 3 tblspn of oil and heat it up..

Add in shallots and cook for 2 mins..Add in the chopped brinjal and mix well..Cook this for 5 mins..

Pour in the tamarind water and bring that to boil..

Add in ground up masala and mix well.

Season with salt and sugar..

Bring that to boil and simmer for 30-45 mins until the gravy is thickened and oil floats on top..Garnish with cilantro..

Make tempering by heating oil and crackling in mustard seeds,cumin seeds,hing and curry leaves..

Pour this over the gravy and mix well

Serve with rice..