Indian chicken and chips

Method

1. Begin the day before serving. Mix the marinade ingredients in a glass/ceramic mixing bowl. Make slashes in the chicken legs using a knife, then add them to the bowl, turning to coat with the marinade. Cover with cling film and refrigerate overnight.
2. Peel the potatoes and cut into chunky chips. Add to a pan of cold salted water, bring to the boil, then cook until just soft to the point of a knife. Drain, cool and chill overnight in a roasting tray covered with cling film.
3. When ready to cook, heat the oven to 200°C/180°C fan/gas 6. Put the chicken and marinade in a roasting tin and roast for 45-50 minutes until cooked. Cool, then discard the skin and strip off the meat in bite-size chunks, putting it in a bowl. Squeeze over the lemon. Leave the oven on.
4. Take the chips out of the fridge. In a small bowl, mix the cayenne and turmeric with a splash of oil, season and add to the roasting tray with the chips, turning to coat. Roast for 45 minutes, turning occasionally.
5. Meanwhile, make the masala sauce. In a food processor, blend the chilli and ginger with the tinned tomatoes until smooth. Put a large non-stick pan over a medium-high heat, then melt two-thirds of the butter and fry the chicken chunks, in batches, until buttery and browned. Set aside for a few minutes.
6. Add the rest of the butter to the pan, then fry the rest of the spices for 1-2 minutes. Add the spiced tomato mixture and cook for 5-6 minutes, stirring as it thickens. Add the double and single cream and a good pinch of salt, then stir well.
7. Return the fried chicken pieces to the pan and mix in. Lower the heat, then simmer for about 10 minutes. Leave to rest for 5 minutes, then garnish with chopped coriander and serve with the piping hot chips.