Drambuie is a sweet, gold-colored liqueur with a Scotch whisky base that is accented with the flavors of Scottish heather honey, herbs, and spices. It's produced in Scotland and has become a staple in bars across the world.

Drambuie's popularity is largely attributed to the Rusty Nail cocktail in which it's paired with scotch. The Prohibition-era cocktail took the edge off bootlegged whiskey and helped introduce U.S. drinkers to the newly imported liqueur. The fact that it was a favorite drink of the Rat Pack (Frank Sinatra, Dean Martin, Sammy Davis Jr., etc.) helped propel the Rusty Nail and Drambuie to the fame they retain today.