Peel the outer skin of the bottle gourd and cut into 2 inch pieces.
Heat a pan with cooking oil and add mustard seeds, urad dal, curry leaves. Then, add the bottle gourd pieces along with salt. Simmer with a lid and cook for 10 mins.
Check to see if the vegetable has turned soft. Add red chili powder, and coriander powder. Stir well. Cook again for 5 - 7 mins.
When the bottle gourd is cooked well, finally add the ground nut powder. combine everything and remove.