Jack's Manual by J. A. Grohusko (1910, p.82)

0.5 portionDubonnet base
0.5 portionItalian vermouth modifier
ice — cracked iceother
  1. Stir the Dubonnet and Italian vermouth with cracked ice.
  2. Strain and serve.

Ice: Cracked ice

See also: Dubonnet Cocktail, Byrrh Cocktail