Shallow fry the marinated prawns and keep it aside. In the remaining oil, sautT onions & green chillies.
When the onion gets dark brown color, add the tomatoes and 1/2 tsp chilly powder if required.
After that, add the curd and coconut paste. Mix them well.
Add the fried prawns to it and cook for some more time. Then add the garam masala and finely chopped coriander leaves. Give it a good stir. So masala is ready.
For Garnishing:
1)Heat oil in a pan, fry the sliced onions till it becomes golden brown. Remove the onion and fry cashew and after that raisins. Keep it aside.
How to layer:
1)Take a heavy bottomed vessel or a non stick pan. Apply some ghee to the vessel.
First spread some prawns masala in the vessel. Over that add the rice(2 plates), then some cashew & raisins, chopped coriander leaves, mint leaves, add 2 drops pineapple essence and finally squeeze lemon juice over it.
Again repeat the same step, prawns masala, rice and then the garnishing ingredients. Layering completed.
Going to dum:
1)Heat a tava, place the biriyani vessel over that. Reduce to low flame and cook it for 15-20 mins. Our prawns dum biriyani is ready to serve.
2)Serve with raita, pickles and pappad.