Place a Cocktail glass into the freezer to chill.
Meanwhile in a cocktail shaker, add 1½ ounces of Bourbon, ½ ounce of simple syrup, ½ ounce of Lemon juice, 1 bar spoon of Absinthe, and an egg white.
Dry shake until the mixture starts to get frothy.
Add ice to the shaker and shake again until well chilled.
Take the Cocktail glass out of the freezer and rinse with a bit of absinthe and then discard.
Strain the mixture into the rinsed Cocktail glass.