I love to eat this dish outside, when the smell of the spices flood the air with their fragrance. Turmeric-stained roast chicken pieces are a bewitching sight, but it is the texture of the popping mustard seeds and the crisp, oil-soaked potatoes, with their lip-tingling heat, that I really love. Serve with cooling bowls of raita and warm flatbreads to scoop up every last mouthful.