Grill the eggplant on open flame [caution: do not char it]
Heat 1tsp of oil in a pan
Add chana dhal, coriander seeds, red chili and roast until golden brown
Grind the above into a fine powder and keep it aside
Peel off the skin and wash well so that smoke smell goes off
Grind the grilled eggplant in a mixer into a coarse paste
Heat 1tbsp oil in a pan
Fry green chilli and keep aside
Add small onion shallots and roast until golden brown
Add tamarind extract
Add sambar powder, turmeric powder, salt, asafoetida
Let it boil for 5min
Add the ground powder and mix well
Add the ground eggplant and mix well
If the mixture is too thick add some water
Allow it to boil for 5min
Add remaining oil and garnish with fried green chilli, curry leaves and coriander leaves
Serve hot with pongal or idli or dosa