Wash, skin and cut up the drumsticks into 3 inch long pieces. Boil in lightly salted water till soft.
While the drumsticks are boiling grind together the coconut, cloves, cumin, garlic and tumeric.
In a pot put in 1 tablespoon oil add the mustard seeds, and curry leaves when they crackle add the sliced onions and fry. Add the ground masala and mix well with the onions add in the drumsticks along with the water. Add more salt if required, drop in the Kokum and simmmer for 10 minutes.