special sauce

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English[edit]

Noun[edit]

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?