Wash and cut brinjal into small pieces. Soak tamarind in ½ cup of water.
Heat 1 tsp of oil in a pan, add chana dal roast for a minute.
Then add coriander seeds and red chilis, roast for 2 or 3 minutes in medium flame.
Once done, turn off the flame and cool it down.
Make it as coarse powder, with mixer grinder.
Heat oil in a pan, add chopped onions, sauté till it is translucent.
Then add brinjal, mix gently and cook for 8-10 mins or till tender.
Once brinjal cooked, mush it up with a masher.
Now add tamarind pulp, and add turmeric powder, asafoetida, and salt.
Cook for 5 more minutes in medium flame.
Then add cooked onion brinjal mixture.
Turn off the flame, serve hot with idli or dosa.