- Wash and soak kidney beans .Boil inthe same liquid till tender. Prepare vegetables . Slice onions and slit green chillies . Grind together coriander powder , chilli powder turmeric , garlic, ginger and dry coconut . Heat oil . Fry spices. Add prepared vegetables except chopped tomatoes and sliced ingredients ,salt and a little water if necessary and if necessary and cook on a slow fire till vegetables are cooked . Add kidney beans and simmer . Soak tamarind in a small quantity of water ,strain and add to cooked vegetables .Or add dry mango powder . Bring to boil , simmer for a few minutes and remove .