from PDT
Dry-shake, then shake with ice and strain into a chilled Vieux Pontarlier Absinthe-rinsed egg coupe. No garnish.
Harry Craddock writes that this drink is "so called because it will either cure Rattlesnake bite, or kill Rattlesnakes, or make you see them." —Harry Craddock, The Savoy Cocktail Book, 1930