What ingredient is added to a Rusty Nail alongside Scotch?

The Rusty Nail cocktail is a classic mixed drink that is typically made with Scotch whisky and Drambuie. Drambuie is a whiskey-based liqueur that has a distinct flavor profile due to its blend of Scotch whisky, heather honey, herbs, and spices. This combination creates a rich and sweet contrast to the smoky notes of the Scotch, making it an essential component of the cocktail.

In the context of this drink, the sweet and herbal characteristics of Drambuie complement the Scotch perfectly, resulting in a smooth, warming cocktail that highlights the quality of the whisky used. Understanding the role that Drambuie plays in the Rusty Nail helps bartenders appreciate the balance of flavors and the historical significance of this drink within cocktail culture.