Ingredients:

Horsegram/kulthi 1 cup
Water 4 cup
1 medium onion
Tomato 1
Tamarind water 1 cup
1/2 tsp Turmeric powder
1 tbsp chilly powder
Salt to taste

For tadka:
2 tbsp coconut oil
1 tsp cumin
1 tbsp mustard seeds
4-5 crushed garlic cloves
6-7 curry leaves
Few dried red chilly