Don't let the cheese in the marinade throw you - this is an authentic tandoori recipe. Chefs first introduced cheese to quieten the flavours of the original chicken tikka for the tourists and replaced the strong flavours with more delicate spices.
For the chicken, place all the marinade ingredients into a large bowl and mix well. Pierce the chicken pieces all over with a fork and add to the marinade. Leave to marinate in the fridge for a few hours, if possible, bringing the chicken back to room temperature before cooking.
To cook the chicken, preheat the grill to medium. Brush the grill rack liberally with oil and place some aluminium foil on the oven floor to catch any drips. Thread the chicken pieces onto the skewers, spacing them apart so they do not touch. Grill for 6-8 minutes, turning halfway through the cooking time. Then baste the chicken with the butter and grill for another minute, or until slightly charred at the edges and completely cooked through.
Using a fork, slide the chicken pieces off the skewers and sprinkle over the chaat masala, if using. Divide the chicken into five equal portions and place each portion in the middle of a warmed tortilla. Top with the sliced vegetables and a spoonful of the chutney. Fold over the top of the tortilla and pull in the sides. Cut in half on the diagonal and serve.
Equipment: for this recipe, you'll need ten wooden skewers, soaked in water for half an hou
