Step 1

For the piri-piri sauce, mix the vinegar, oil, paprika, oregano, cayenne pepper and 1 teaspoon lemon juice in a small bowl and season with salt and pepper. Spoon 2 teaspoons of the sauce into a bowl and set aside.

Step 2

Lay the chicken fillets in a shallow dish, pour over the rest of the marinade and turn the chicken a few times to thoroughly coat. Leave for 10 minutes or chill for a few hours.

Step 3

Mix the lemon zest, a teaspoon lemon juice, garlic, yoghurt and mayonnaise together to create a creamy sauce. Place the onion in a sieve and rinse with boiling water – this stops it being too strong.

Step 4

Heat a frying pan until really hot and add the chicken fillets, shaking off any excess marinade into the shallow dish. Fry, turning halfway, for about 5 minutes until browned and cooked through. Towards the end, carefully drizzle the marinade from the dish over the chicken, it will splutter and steam but it should keep the chicken moist.

Step 5

Stuff the bread with lettuce, carrot, onion and plenty of garlic sauce. Shred or cut the chicken into strips, toss with the reserved marinade and stuff into the bread. Serve immediately.