Wash mochai in lots of water, soak them in water overnight. Now take them in pressure cooker and cover with water. Cook them for 5 whistle. Simmer the stove for 15 to 20 mins. Switch off the flame and let the steam escape all by itself. Open the pressure cooker and check whether the beans is soft.
Take a nonstick pot. Add oil in it and heat it up.
Add in the tempering ingredients and let it sizzle for a min.
Add in shallots, garlic and saute for a min.
Add in tomatoes and give a stir, Cook for a min.
Add in chopped brinjal and mix well with the oil.
Add in turmeric, chilli and coriander powder. Mix well.
Now pour in the tamarind pulp along with some water.
Add in salt and jaggery to taste. Bring everything to a boil.
Add in the cooked mochai, Bring it to boil and simmer the stove for 15 more mins.