The Cocktail Spirit with Robert Hess
Rob Roy Cocktail
The Rob Roy gets it's name from an opera by the same name which opened in New York in 1894. In those days it was common to bring about new cocktails and name them after popular shows. For the Rob Roy, they simply took an existing popular cocktail, the Manhattan, and substituted the rye for scotch. Most likely, it would have been made with Dewar's blended scotch, which had just recently begun being imported into the states.
1 1/2 oz Scotch
1/2 oz sweet vermouth
dash Angostura Aromatic Bitters
Stir with ice.
Strain into a cocktail glass.
Garnish with a lemon twist.