Grind all the ingredients listed under ground masala as raw. Keep it aside.
Peel the bottle gourd outer skin, wash and cut into 1 inch pieces. Keep it aside. Skin can be used for making tokku also.
Heat a kadai with cooking oil. Add mustard seeds, cumin seeds, methi, urad dal, curry leaves, finely chopped onions. Fry till the onions turn to brown colour.
Then, add Sorakaya pieces, fry for few mins on high, add salt and turmeric powder. Mix well, simmer and cover to cook for 5 mins.
Next, add the ground masala, mix everything together and simmer for 2 mins. Then, add the required water and pressure cook it for one whistle.