1⁄2 oz. absinthe (preferably Lucid)
2 oz. rye
1⁄4 oz. simple syrup
Pour absinthe into an old-fashioned glass; swirl to coat, and discard liqueur; fill glass with ice. Shake rye, simple syrup, 3 dashes Peychaud's bitters, and 1 dash Angostura bitters in a cocktail shaker filled with ice. Discard ice in glass; strain cocktail into glass. Rub the rim with a lemon twist and drop twist into cocktail.