Add cumin seeds and whole red chilli to crackle.
Add chopped onion and saute until dark brown.
Add ridge gourd,Bengal gram,turmeric powder and cover the lid and steam it.
When cooker release the whistle simmer the flame for ten mins.

Once cooled open the lid an the cook for 5 -7 mins till water absorb it.
Add salt and cook for 5 mins.
Serve with steamed rice.