Take a large pan, grease with ghee. Lay the bay leaves in a single layer to cover the bottom of the pan. This will protect your base layer from burning.
Step 1 : Add the mutton pieces.
Step 2 : Add the fried potatoes , place them in middle and not towards the sides of the pan.
Step 3: Add 1 tsp of biryani masala, half lime juice, 200g of Yakhni and the remaining Birista.
Step 4 : Strain the rice from net and add half of the it, if little water is extracted along with rice it is absolutely fine.
Step 5 : Add half tsp of biryani masala , add the mixture of saffron soaked in milk.
Step 6 : Add the second layer of rice. Finish with 1 cup of milk , kewra water and ghee. Add ghee to the sides.
Cover with an aluminium foil place a tight fitting lid on top. Set the pan on medium to low heat for 30 minutes. Turn of the heat and allow to rest for 15 minutes.
Serve with Boiled egg, Sliced Cucumber and Onions.