Step 1.
- Chill an Old Fashioned glass by placing it in the freezer or filling it with ice water for a few minutes.
Step 2.
- In a mixing glass, combine the absinthe, simple syrup, and Angostura bitters.
Step 3.
- Add ice to the mixing glass and stir gently until well chilled and blended.
Step 4.
- Discard the ice water from the chilled Old Fashioned glass.
Step 5.
- Strain the mixture into the glass over one large ice cube for slow dilution.
Step 6.
- Garnish with an expressed orange twist, releasing the oils over the drink.