Café Royal Cocktail Book by W. J. Tarling (1937, p.181)

0.7 partgin — Gin, Booth'sbase
0.1 partVodka — Vodka, Wolfschmidtbase
0.1 partcreme de noyau — Crème de Noyaumodifier
0.1 partForbidden Fruit — Forbidden Fruitmodifier
  1. Shake.

Invented by J. ("Jimmy") Leven.