Shahi Chicken Biryani

Name: Shahi Chicken Biryani
Ingredients: 6 Cup Kohinoor Extra Long Grain Basmati Rice; 1 Kg Chicken; 3 tbsp Vegetable Oil; 3 tbsp Clarified Butter; Thin Sliced Onion; 3 medium Peeled & Cut Potato; 30 gm Ginger Paste; 30 gm Garlic Paste; Green Chilies (paste); Coriander leaves (paste); 2 tsp All Spice Powder; 4 tbsp Yogurt; 4 tbsp Tomato (Puree or Paste); 3 tbsp Red Chilli Powder; 2 tbsp Turmeric Powder; 1 Pinch Saffron; Salt to taste; 3 tsp Milk