Grind garlic, ginger, and green chillies to a smooth paste. Add little water to make the process easier. Marinate chicken using half of the paste, ground turmeric, 1 teaspoon ground red chilies, ½ teaspoon garam masala and salt. Keep it in the refrigerator for an hour. Then shallow fry the pieces in oil. Set aside.

Soak 7 cashew nuts in ½ cup water. Set aside for half an hour. Then grind the nuts to a smooth paste. Set aside.

Soak basmati rice in water for half an hour and set aside.

Heat some oil in another pan and fry ¼ cup sliced onions, 13 cashew nuts and raisins separately. Set aside.

To prepare rice for the biriyani:-

Heat 2 tablespoon ghee in a deep pan and splutter fennel seeds. Fry one medium onion until translucent. Add cloves, cardamom pods, cinnamon stick and bay leaves. Fry again. Add 8 cups of water along with 3 cups of washed rice. Add lemon juice. Season with salt. Let it come to boil. Then turn down the heat and cover the pan with a lid. Once cooked, drain and keep it aside.

To prepare gravy for chicken:-

Heat oil in a pan and fry the rest of onions until golden brown. Then add remaining paste and fry for a few seconds. Throw in tomatoes, the rest of the spices ( ground coriander, ground red chilies, ground black pepper, garam masala), enough salt and cashew nut paste. Fry again for 3-4 minutes. Add chicken pieces along with ⅓ cup water. Finally, add 2 teaspoon yogurt and 1 teaspoon vinegar. Cook again for a couple of minutes.

To arrange the layers :-

Take a deep heavy bottomed pan and place a layer of chicken. Then add a layer of rice. Pour ½ teaspoon rose water. Use chicken and rice alternatively until finished. But make sure the top layer is rice. Pour ½ teaspoon rose water. Add 1 tablespoon ghee.

Now you can garnish biryani with fried cashew nuts, raisins, onions and chopped coriander leaves.

To 'dum' biryani, place the pan on a large tawa over low heat for 10 minutes.