Heat 3/4 cup water in a heavy pan. Bring to a boil with turmeric, salt and hing. Add the dudhi cubes and boil for 5-7 minutes until the pieces are soft but retain shape. They may be some water left over, but do not drain it.
Microwave for 3 min on high
Add masala powder to the cooked gourd pieces in the same pan. On a low flame, mix the cooked gourd with the masala. The excess water will be absorbed by the powder. Add a little more water if necessary.
Check for salt and garnish with coriander. This dish with pair fantastically with chapatis or even dosai, may be even bread.