Café Royal Cocktail Book by W. J. Tarling (1937, p.192)

0.25 partlemon juice — Lemon Juiceacid
0.25 partorange juice — Orange Juiceacid
0.5 partgin — Booth's Ginbase
1 unitegg white — white of 1 Eggother
1 dashGrenadine — Grenadinesweetener
  1. Shake.

Invented by J. W. Mellish.