Sabz-E-Kadhi, Vegetables in Chickpea-flour sauce (India)

Makes 4 servings.

1/2 cup besan (a flour made of chick peas)
1 3/4 cups of water
1 medium onion chopped
1 cup yogurt
1 tbsp cumin seeds
1 tsp mustard seeds
2 tbsp vegetable oil
1/4 tsp turmeric
1/2 tsp cayenne pepper
1 tsp coriander powder
1/2 lb. frozen vegetables

Mix the besan and water and stir until the mixture is smooth. Set aside. Heat the oil in a medium skillet and add mustard seeds and the cumin seeds. When the mustard seeds begin to pop, add the onions and saute for a minute. Add turmeric, cayenne and coriander and stir for a minute. Add the besan and water mixture and the yogurt. Add the vegetables and simmer for 5 minutes, stirring occasionally. Serve over rice.