Stir the scotch, amaro, vermouth, and bitters over ice vigorously for at least 30 seconds. Strain into a cocktail glass and garnish with lemon oil.
The evolution of this cocktail started with the My Own cocktail in Esquire's handbook for hosts. I think there is much to do with gin, vermouth, bitters, and liquor. I had just made a batch of Jamie Boudeau's approximation of the old Amer Picon so I wondered what My Own would taste like with my Amer in place of Cherry Heering. The result was pretty decent, but I kept thinking scotch for some reason. The result was somewhat similar to the Dagny Taggart that they serve at Seven Grand in LA.