Wash and peel ridge gourd, chop it finely and set aside.

Now heat oil in a pan, crackle mustard, cumin and curry leaves.

Add in onions and chillies, salt and saute till golden.

Add in tomato puree and cook till oil separates.

Now add in spice powder and fry for couple of mins.

Now add in cubed ridge gourd and mix well. Cover and simmer for 5 mins till it is cooked.

Now add in water and bring it to a boil.

Simmer for 10 mins.

Add in coriander leaves and mix well. Serve with roti.