”Two all-beef patties, special sauce, lettuce, cheese, pickles, onions on a sesame seed bun.” You may remember this jingle that once described the McDonalds’ Big Mac. That burger was created to go head-up against the Hardee’s Husky, which was, well, husky, and the first-to-market with a “special sauce.” Over the years, the term “special sauce” has been re-deployed beyond the burger wars, from condiment to handy metaphor.