Prepare chicken breast - If using breast, pound to 1 cm / 0.4" even thickness (cover with go-between or freezer bags, use a meat mallet or rolling pin). Then trim each chicken piece so it is a bit larger than the buns (factor in 20% shrinkage when it cooks).

Peri Peri Sauce - Put the Per Peri Sauce ingredients in a jug and blitz until smooth using a stick blender, or other appliance of choice (food processor, blender, NutriBullet).

Marinade chicken - Pour 1/2 cup of the sauce into a bowl or ziplock bag. Add the chicken and turn to coat. Marinate for at least 3 hours, or up to 24 hours, in the fridge.

Perinaise - Mix together the Perinaise ingredients. Set aside.

Cook chicken - Heat 1 tablespoon of olive oil in a fry pan over medium / medium-high heat, OR brush BBQ grill with oil then heat. Cook breast for 3 minutes on each side, thighs for 4 minutes (in batches, if they won't fit in the pan), lowering the heat as needed if they are charring too much (char = legit!).

Rest - Remove the chicken onto a plate, loosely cover with foil and rest for 5 minutes. (Meanwhile, toast the rolls)

Assemble - To make the burgers, spread the base of a roll with Peri-naise. Top with lettuce, tomato then chicken, then top with more Peri-naise and extra Peri Peri sauce if desired!