The Ideal Bartender by Tom Bullock (1917, p.39) — Bullock 1917

1.5 jiggersCalisaya base
1.5 jiggersPlymouth gin — Plymouth Ginbase
  1. Fill a large bar glass with shaved ice.
  2. Shake, strain into a cocktail glass, and serve.

Ice: Shaved ice

This matters because it preserves a strongly quinine-bitter pre-war branch that sits outside the better-known vermouth aperitif lane.

The equal-sized bitter and spirit portions make this a real structural alternative, not just a modifier dash variation.

See also: Dubonnet Cocktail, Turf Cocktail