Dudhi chana nu shaak - a gujarati speciality (bottlegourd and bengal gram curry)

Ingredients

• 500 gms dudhi, peeled and diced
• 1/2 cup Chana dal, washed
• 2 teaspoons oil
• 1 teaspoon cumin seeds
• 1 teaspoon mustard seeds
• a generous pinch of Asafoetida
• 1 teaspoon red chilli powder
• 1 teaspoon turmeric powder
• 1 teaspoon coriander powder
• 1 teaspoon cumin powder
• 1 teaspoon sugar
• Salt to taste
• 1 cup of water