Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   3      cups          mixed vegetables -- (sweet potatoes,
                        -- eggplant, cut
                        into 2" pieces
                        -- bell pepper,
                        -- onions, potatoes,
                        -- French beans,
                        -- tomatoes)
   2      tablespoons   tamarind extract
   1      teaspoon      fenugreek seeds
     1/4  teaspoon      mustard seeds
     1/2  cup           oil
     1/2  teaspoon      turmeric powder
   1      teaspoon      red chile powder
   1      teaspoon      sugar
  10                    curry leaves
   3      cups          water
                        coriander leaves -- to garnish
                        salt -- to taste

Preparation:

In a deep skillet, heat oil on medium and add mustard seeds and Fenugreek seeds. When Fenugreek seeds are light brown, add chopped onion and fry until light brown. Now add vegetable pieces, salt, turmeric powder, red chile powder and fry for 5 minutes on high heat while stirring occasionally. Next add tamarind extract, coriander leaves, curry leaves, sugar, water and stir well. Cook on medium heat for 20 minutes such that the sauce is not too watery or too thick.