Step 1: 1. Start by mixing the diet cola, ketchup, sweet chilli and soy sauce.
Step 3: 2. Place the chicken wings in to a large pan. Tip in the mixture and boil on a medium heat for 40 mins or until the chicken is cooked all the way through.
Step 5: 3. After 40mins the sauce should be thick and sticky, if it isnt raise the heat and continusly stir untill it thickens.