Add the mayonnaise, lemon juice and vinegar to a bowl and whisk until smooth.

Add garlic, chilli sauce, cayenne, sweet paprika, smoked paprika, chilli flakes, salt and sugar.

Whisk thoroughly until completely combined.

Add water 1 tsp at a time until it reaches that slightly loose burger-sauce consistency.

Refrigerate for at least 1 hour, preferably a few hours, before tasting again.

Adjust with extra cayenne/chilli for heat, lemon or vinegar for sharpness, or a tiny amount more sugar if the acidity is too aggressive.