Tomato Rasam

Ingredients 

Cooked & mashed toor dal      : 2 tbsps
Dal water                 : 1/2 cup
Tomatoes                 : 3
Tamarind water         : 1/2 cup
Rasam powder          : 1 tbsp ( recipe Here ) 
Mustard seeds          : 1/2 tsp
Cumin seeds             : 1/2 tsp
Ghee                        : 1 tsp
Curry leaves
Coriander leaves
Asafoetida
Salt

Method

Boil tamarind water with salt,asafoetida,chopped toamtoes,turmeric powder and rasam powder,allow it to boil till the tomatoes gets mushy.
Add dal water,mashed dal and some more water to it.  
Let the rasam boil for few minutes
Heat ghee in a pan, add mustard seeds,cumin seeds,curry leaves one by one,whey they splutter  pour it over the rasam.
Garnish with coriander leaves and serve with hot rice.