Chicken curry with mango chutney

Ingredients

• Butter chicken
• 1.5 kilogram chicken, segmented
• 1/3 cup tandoori paste
• 1/3 cup ghee
• 1/4 cup tomato paste
• 1 2cm piece ginger, peeled, grated
• 1 long green chilli, finely sliced
• 1 teaspoon garam masala
• 1 teaspoon cumin
• 1 teaspoon sugar
• 1 cup water
• 300 millilitre carton cream
• 1 lemon, juice
• naan, mango chutney, lemon cheeks, to serve