Heat oil in a cast iron pan.
Add mustard seeds, cumin seeds, and curry leaves.
Saute the chopped onions until they turn golden.
Add hing powder, turmeric and saute this well.
Add ginger, garlic, green chili, and dry coconut then saute this well.
Add the tomato and cook briefly.
Add salt, kanda lasun masala and groundnut powder then saute this well.
Add the chopped brinjals and mix well to coat them with the masala.
Add 3-4 tbsp of water and mix well then cover the pan, and let it cook on low or medium heat.
Cook for about 15 minutes, stirring occasionally, until the brinjals are tender.
Your Masaledar Vangi is ready to enjoy.