Hyderabadi Biryani (Dum Biryani, Hyderabadi Murg Pakki Biryani, Hyderabadi Biriyani)

Ingredients
To make rice
Basmati Rice - 3 cups
Onion - 1 big
Green Chilly - 6
Ginger garlic Paste -  1 tsp
Salt - as needed
Fennel Powder - 1/4 tsp
Coconut Milk - 1 cup
Water - 3 cups
Ghee - 2 tblsp

To make Gravy
Chicken - 2 lbs (cut into pieces)
Onion - 2 (chopped)
Tomato - 3 (chopped)
Ginger Garlic Paste - 2 tblsp
Green Chilly - 10 (slit)
Mint Leves - 1 cup (chopped)
Cilantro - 1 cup (chopped)
Curd - 4 tblsp
Fennel Powder - 1/2 tsp
Cumin Powder - 1/2 tsp
Corriander Powder - 2 tblsp
Chilly Powder - 2 tblsp
Turmeric Powder - 1/2 tsp
Pepper Powder - 1 tblsp
Garam Masala Powder - 1 tsp
Whole Garam Masala - 1 Bay Leaf, 2 Cinnamon Sticks, 5 Cloves, 3 Cardomom
Salt - as needed
Ghee - 2 tblsp
Fried Onions (Birista) - 1 cup
Roasted Cashews - 10 pieces or as needed
Lemon Juice - 2 tblsp
Orange food colour/ Saffron - a pinch