What do you do with leftover cooked rajma (kidney beans) water?

It's winter and all you want is a  nice hot bowl of soup or rasam.Why not make some hot and spicy rasam with the left over rajma water. It has a nice thick consistency; good enough to use it for soups and rasam.
Why not make some hot rasam for this winter!The Indian spices and the tangy tamarind taste can really help your senses open out....

2cups rajma water
1tbs refined/ground oil
2 nos garlic cloves, crushed
2-3nos curry leaves
2tbs finely chopped onions
2tbs finely chopped tomatoes
1tsp mustard seeds
1/2 tsp pepper powder
1tsp jaggery powder
1tbs tamarind soaked in about 1/4 cup of warm water for 20minutes
salt to taste

Heat oil in a pan and add mustard seeds and curry leaves. Once the seeds and the leaves have popped and crackled, add onions and crushed garlic. After the onions have cooked and are soft, add tomatoes and cook until soft. Add rajma water, salt, jaggery,tamarind and let it boil for about 10 minutes. Garnish it with fresh cilantro and serve with rice or just drink it up! Serves 2.

My tastebuds: The rajma water adds a surprisingly different and a distinct flavour.

This is my submission to this month's  MLLA #30, hosted by Mharo Rajasthan and The Well Seasoned Cook, to Complete my thali, hosted by Enveetu Kitchen and Joy of Cooking and to Souper Sundays hosted by Kahakai Kitchen.