Take two old-fashioned rocks glasses

In the first one, add ice to chill and set aside

In the second one, muddle a sugar cube with the three dashes of Peychaud's bitters

Add the Sazerac Rye Whiskey, then add ice and stir

Take the first glass, empty the ice and coat the glass with Herbsaint, then discard any excess

Strain the contents from the second glass into your Herbsaint rinsed glass

Garnish with a lemon twist