Heat oil in a pan. Add mustard seeds and cumin seeds and allow it to crackle. Now add onions, red chilli, garlic,tomatoes, peanuts and coconut.

Now allow it to cook. once the onions gets soft remove it from flame. Allow it to cool. And add this mixture to blender.

Now put this paste in a pan and add turmeric, red chilli powder, coriander powder, salt, sugar and garam masala.

Cook the gravy for 5 mins. Now add tamarind paste and sugar. (sugar is optional)

Give it a nice mix. Time to add fried Brinjals.

You can serve it with nice soft chapati's or biryani or also with simple steam rice.