Extract 1 and ½ cup tamarind from a lemon sized tamarind.
Soak the dried mochai overnight and pressure cook for 3-4 whistles. Add 1 cup of water and little salt while cooking. Drain the water and keep it aside.
Grind the coconut, pepper and cumin seeds into a fine paste by adding little water.
In a pan add 1 tbsp sesame oil and add the mustard seeds and asafoetida.
Once the mustard crackles, add the garlic and small onions.
Saute till golden brown.
Now add the tomato.
Add the cut brinjals and cook for a minute.
Now add in the cooked mochai and mix well.
Add 1 and ½ of tamarind extract.
Add in the sambar powder, turmeric powder and salt.
Mix well and let this boil in medium flame till it reaches a kuzhambu consistency.
Add the ground coconut paste to this now.
Mix well and boil for 3 minutes.
Switch off the flame.
Smear ½ tbsp of sesame oil.
Kara kuzhambu is ready.