Café Royal Cocktail Book by W. J. Tarling (1937, p.79)

0.33 partdry vermouth — Martini dry vermouthbase
0.33 partIrish whiskey — Dunville Irishbase
0.17 partaurum — Aurummodifier
0.17 partMaraschino liqueur — maraschinomodifier
  1. Shake with ice.

See also: Donegal