Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
                        an orange-sized tamarind ball
   1      tablespoon    jaggery -- powdered
   1      teaspoon      turmeric
  12                    green chiles -- chopped
   4      sprigs        curry leaves -- chopped
   1      4" piece      ginger -- chopped
                        salt -- to taste
                        ***FOR SEASONING***
   1      teaspoon      black mustard seeds
   1      teaspoon      black gram dal
   3                    red chiles -- broken
   4      tablespoons   oil

Preparation:

Extract juice from tamarind. Heat oil and add mustard seeds, black gram dal and red chiles. When brown, add green chiles and curry leaves and fry for a couple of minutes. Now add tamarind juice, jaggery, turmeric, salt and ginger. Cook until mixture is thick. - - - - - - - - - - - - - - - - - -