Jack's Manual by J. A. Grohusko (1910, p.92)

1 dashAbsinthe base
1 portionBourbon whiskey — Source gives 100% Bourbon whiskey.base
1 dashAngostura bitters bitter
ice — broken iceother
0.25 lumploaf sugar — Quarter loaf of sugar.sweetener
  1. Chill the old-fashioned glass in ice for three minutes.
  2. Build the absinthe, bourbon whiskey, quarter lump of loaf sugar, Angostura bitters, and broken ice in the glass.
  3. Stir, strain, and serve.

Ice: Broken ice

See also: Old-Fashioned Cocktail, Sazerac Cocktail

Set old-fashioned glass in ice for three minutes before building.