In 1940, the Official Sazerac Cocktail recipe was modified to use Herbsaint as the absinthe. Finally, in 2000, the Official Sazerac Cocktail recipe was modified to use Sazerac Kentucky Straight Rye Whiskey. In 2009 I had to change a few things because it was impossible to get hold of a bottle of 18yr old Sazerac Rye Whiskey. Instead I substituted Rittenhouse Rhy andOld Overholt Rye. While not as smooth as the Sazerac Rye it gets the job done and done well! If you need bar supplies and some of the finest ingredients and liquors you could find, you definitely have to try Cask in San Francisco.