The Cocktail Book a Sideboard Manual for Gentlemen (1901, p.35)

3 dashesorange bitters base
0.67 portionPlymouth gin — Source gives two-thirds.base
0.33 portionFrench vermouth — Source gives one-third.modifier
1 spoonfulyellow chartreuse modifier
  1. Fill a mixing glass with ice and add the ingredients.
  2. Mix and strain into a cocktail glass.

Ice: Ice

This is a strong example of the liqueur-accented dry aperitif field widening beyond the later-famous names.

The Chartreuse is only a spoonful, so it functions as a structural accent rather than a sweet base.

About Town Cocktail Book by Joe Fitchett (1925, p.21) — About Town 1925

3 dashesorange bitters — Orange Bittersbase
0.25 gillPlymouth gin — Plymouth Ginbase
0.33 gillFrench vermouth — French Vermouthmodifier
1 tablespoonfulyellow chartreuse modifier
  1. Fill with ice, mix, and strain into cocktail glass.

Ice: Ice

This matters because it preserves a Chartreuse-lifted Plymouth aromatic in a social cocktail source.

See also: Martini Cocktail, Fitchett Cocktail