Mixed Drinks by Herbert W. Green (1895, p.66)

1 jiggerAbsinthe — Absinthebase
Seltzer water — syphon seltzerdilution
1 egg whiteegg white — white one eggother
1 large spoonfulOrgeat syrup — Orgeat syrupsweetener
  1. Fill a mixing glass two-thirds full of fine ice and add the absinthe, orgeat, and egg white.
  2. Shake well, strain into a thin lemonade glass, fill with syphon seltzer, and serve.

Ice: Fine ice

This is a valuable absinthe checkpoint because it preserves a cold restorative egg-white-and-orgeat branch rather than only ritual service.

The shaken absinthe base and seltzer finish are both central to the drink's identity.

See also: Absinthe Frappe, Elixir La Casino