On The Rocks' limited edition Manhattan craft cocktail is made with Basil Hayden Dark Rye Whiskey (a personal favorite of mine), a unique flavor profile featuring Kentucky rye grain, Canadian rye, and a splash of California port.
The Manhattan cocktail has come along way since its debut back in the early 1870s. Its key component other than using a good Rye whisky like George Dickel Rye, is choosing the right Bitters.