In a Rob Roy, what type of whiskey is primarily used?

The Rob Roy is a cocktail that is fundamentally a variation of the Manhattan, traditionally made with whiskey, sweet vermouth, and bitters. However, a key distinction in the Rob Roy is the specific type of whiskey used. The cocktail is designed to highlight the flavors of Scotch whisky, which is a type of whiskey produced in Scotland.

Using Scotch imparts a unique character and complexity to the drink, differentiating it from the Manhattan, which typically uses bourbon or rye whiskey. The smoky and rich flavor profiles of various Scotch whiskies enhance the overall taste experience of the Rob Roy. In this context, the answer emphasizes the importance of Scotch whisky in maintaining the essence of the cocktail and its traditional roots.