Heat 1/2 cup cooking oil in a saucepan and add all the whole spices. Add 2 onions chopped and fry till light golden, along with 4 green chilies (with slits) and chopped mint leaves. Add 3 tbsp ginger & garlic paste and fry 1 minute. To this add, 3 tomatoes chopped and cook till it is soft. Now add all the spice powders like 1/2 tsp turmeric, 2 tbsp red chili powder, 2 tbsp coriander powder, and 1 tbsp cumin powder. Cook on low flame for 5 minutes till aromatic and oil separate. Then add 1/2 cup yogurt, Salt, 1 tbsp lemon juice, 1/4 tsp garam masala powder, and 1 cup fresh coriander leaves. Place the lid and cook for another 5 minutes. Add prepared Chicken 65 to this masala, stir gently. Add 1/2 cup water and cook on low flame for 5 minutes.