Prepare Biryani Masala :- Heat a pan add all ingredients of Biryani Masala. Dry roast it for few second. Let it cool down and grind it for make a fine powder. (You can store it airtight container for long day)

Marinade the Mutton:- In a mixing bowl marinade the mutton with onion paste, ginger garlic paste,yoghurt, red chili powder, turmeric powder, cumin powder, coriander powder, garam masala powder, Biryani Masala powder, 1 drop rose water, 1 drop kewra water 2 tbsp mustard oil, salt to taste cover it with lid and keep it in the refrigerator for at least 1 hrs or overnight.

Wash the rice and soak it in water for 30 minutes. At the end of time drain the water and strain the rice.

Heat a pan add mustard oil and deep fry the onion till golden brown colour and crispy. This is called "Birista". Keep it aside. In remaining oil fried the boiled potatoes till golden colour and keep it aside.

Prepare Biryani Rice:- In a large pot take 1.5 liter water. Add 2 tbsp salt along with all Biryani Rice Ingredients. And allow it to come to boil. When rice 80% prepare switch off the flame and pour cold water and drain the water and strain the Rice and keep it aside.

Cooking Mutton:- Heat a pressure cooker with 4 tbsp mustard oil and 1 tbsp ghee add all tempering whole spices and give a stir and then add marinade Mutton. Over medium flame Cook for 5 minutes and then reduce the flame to low add 500 ml water and pressure cook it on medium flame for 4-5 wishel. Allow the steam to release naturally for another 15 minutes before opening the lid.

Assembly and Final step:- Preheat a tawa over medium flame. Spread some ghee in a heavy bottom cooking pot. Now assembled in order Bay leaves, Mutton pieces, cooked potato, one portions of rice alubukhara, fried onions, sprinkle some Biryani Masala, 1/4 cup Yakhni. Then another layer of rice, sprinkle some Biryani Masala, remaining fried onions, 1/4 cup saffron soaked milk, 1 drop rose water, 1 drop Meetha Attar, 1 drop kewra water and hard boiled eggs.

Sealing the pot with an aluminium foil so that no steam escape. Cover it with a tight fitting lid. Set the pot on preheat tawa on dum on medium- low flame for 20 minutes. Turn off the flame and allow to rest another 15 minutes before serving.