soak rice for 2 hrs. then heat oil in a heavy bottommed pan and add bay leaves and sliced onions and fry till brown .grind the rest of the spices in to a fine paste.next add the ground paste and add little water to avoid burning.fry for a min and then add the sliced tomatoes and add salt .once tomatoes become tender go ahead and add your prawns .and fry well together.Now measure the quantity of water.for 1 cup of rice add 11/2 cup of boiling water to the gravy.let it come to a boil, now check for salt. then strain the water from the rice and add the rice to the gravy. put the lid and cook it on a medium flame for few minutes.when the water gets almost absorbed put an air tight lid and let it cook for another 10 mins.your delicious prawn green masala pulao is ready. Serving Ideas