Bouncy udon noodles, leftover chicken and crisp cucumber matchsticks ... Place the roasted peanuts, dried red chilli flakes, Chinese five-spice powder and garlic in a large heatproof bowl.

Cook on a dry hot pan for about 30 seconds each side. Spoon some yoghurt onto the bread. Slice the chicken off the skewer and add to the bread. Top with a crispy scallion. Roll up and serve.