Fill with ice.
Add:
1 bar spoons gomme syrup*
1 dash Boker's bitters
1 dash anisette
1 oz water or seltzer
3 oz absinthe
Shake. Strain into cocktail glass. Garnish with a lemon twist. Serve.
* Syrop Gomme, or simple syrup.
New & Improved Illustrated Bartender's Manual, 1888