If you love the special sauce that's on McDonald's Big Macs, you'll now be able to whip up a batch of it at home, after the fast food giant revealed the recipe. A marketing video from McDonald's Canada arm shows executive chef Dan Coudreaut making a version of the Big Mac at home and he outlines exactly what's in the special sauce, saying the information actually has been available for a while already so it isn't a secret. The ingredients are: mayonnaise, sweet pickle relish, yellow mustard, onion powder, white wine vinegar, garlic powder, and paprika.