Bihari chicken boti biryani

Ingredients
Chicken 1 kg 20 pieces
Boiled rice 750 gm with salt 1 tbsp
Brown onion ½ cup
Oil 1 cup
Green chilies 6
Aalu Bukhara 15
Yogurt 1 ½ cup
Raw papaya 1 tbsp heaped
Mint half bunch
Ginger garlic 2 tbsp
Chili powder 3 tsp heaped
Mace grinded ¼ tsp
Nutmeg grinded ¼ tsp
Green cardamom grinded ¼ tsp
Turmeric ¼ tsp
Salt 1 ½ tsp
Green chilies 6 grinded
Coriander leaves 2 tbsp grinded
Method
Marinate chicken with all the given ingredients except rice. Leave it for 2 hours. Put in a pan top with boiled rice and half cup water. Leave it to cook on high flame for 10 minutes. Lower flame and cook for 30 minutes until done. Mix and serve. Give dum of coal.