Café Royal Cocktail Book by W. J. Tarling (1937, p.97)

0.33 partlemon juice acid
0.67 partgin base
0.5 sliceOrange — orange slicegarnish
1 dashGomme syrup sweetener
  1. Shake. Egg white or soda may be added if required.

Lineage reconciliation

See also: Gin Skin