Buns: brioche come in halves, so grab 6 to get your 4 middle tiers. Toast the middles both sides. | Want it exact? The real one has 3 pickle slices on the bottom deck. Add them if you like, they're not essential. | Serve with Coke Zero. It keeps the whole meal roughly level with the McDonald's version on calories, which is the honest number. | The sauce keeps 5 days in the fridge and works on everything, so make double.