Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   5      ounces        toovar dal
   1      pint          water
   2                    green beans
   5                    curry leaves
   1      1/2" piece    ginger
   1                    green chile
     1/2  tablespoon    jaggery
   2                    tomatoes
   1      tablespoon    raw groundnut meats
                        salt to taste
                        ***tarka***
   1      tablespoon    ghee or oil maybe used
     1/2  teaspoon      cumin seeds
     1/2  teaspoon      mustard seeds
     1/2  teaspoon      chile powder
   1      tablespoon    freshly chopped coriander
                        leaves
   1      pinch         asafetida

Preparation:

Wash and clean the dal thoroughly and leave to soak for one hour. Wash it again in one or two changes of water and then place it in a saucepan with one pint of water. Wash the drumsticks and cut into two in. long pieces. Add this to the dal with the curry leaves, the salt, chopped ginger, chopped green chile, jaggery, chopped tomatoes and raw groundnuts. bring the dal to the boil, reduce the heat and let it simmer for about 15 minutes. until the dal is well blended and the drumsticks are tender. The consistency of the dal should be like that of a cream soup. To make the tarka, heat the ghee or oil and when hot add the cumin seeds and the mustard seeds. As soon as they start to op add the asafetida and the chile powder. Stir fry for a second only or the chile powder will burn. Pour it over the prepared dal and garnish with fresh chopped coriander leaves. Source: Meera Taneja, "Indian Regional Cookery"