- Chill an Old Fashioned glass by filling it with ice and setting it aside.
- In a separate mixing glass, combine 2 oz of Pisco, 1 sugar cube, and a few dashes of Peychaud's bitters.
- Muddle the sugar until dissolved, then add ice and stir until well chilled.
- Discard the ice from the chilled Old Fashioned glass.
- Rinse the glass with a small amount of absinthe, swirling it to coat the inside, then discard the excess.
- Strain the Pisco mixture into the prepared glass.
- Garnish with a twist of lemon peel, expressing the oils over the drink.