English

Noun

special sauce ‎(uncountable)

1. A basic ingredient in McDonald's Big Mac hamburgers, a sort of Thousand Island dressing (now called Big Mac sauce by the company).
   • 2001 January, Matt Groening, “Parasites Lost”, Futurama, season 3, episode 4

     one day you'll be eatin' a fast-food burger.... Ever wonder what makes special sauce so special?