A Rusty Nail is made by mixing Drambuie and Scotch whisky and can be served in an old-fashioned glass on the rocks, neat, or “up” in a stemmed glass. Versions of the drink can be made using any aged spirit, though blended Scotch whisky is traditional. The cocktail recipe is often credited to the clever bartenders at the 21 Club in Manhattan sometime in the early 1960s.