Louis' Mixed Drinks with Hints for the Care & Serving of Wines by Louis Muckensturm (1906, p.104)

1 liqueur-glassAbsinthe — Absinthebase
ice — Shaved icebase
1 liqueur-glasswater — Waterdilution
  1. Fill a cocktail-glass with shaved ice, add the water and absinthe, and serve with a straw.

Ice: Ice