For preparing Cowpeas Curry, first boil the cowpeas by adding salt and water in a cooker. Allow for 2 to 3 whistles.
Chop the small onions, tomato, red chilli and brinjal.
Heat the oil in the pan and temper the mustard, broken black gram, and cumin seeds.
Add curry leaves, red chilli and onion and saute it for 3 minutes, until the onion turns into brown.
Add tomato and brinjal and mix well.
Add salt and turmeric powder and allow to fry for 2 minutes in medium flame.
Add sambar powder and mix well.
Add tamarind water, mix well and and allow to boil for 5 minutes.
Add required water and cowpea. Mix well and allow to boil for 5 minutes.
Add coconut paste and mix well and allow to cook for 15 minutes in medium flame, until it becomes gravy consistency.
The tasty and nutritious dish is ready. Serve hot with rice.