Café Royal Cocktail Book by W. J. Tarling (1937, p.233)
| 1 unit | egg yolk — Yolk of an Egg | base |
| Soda water — Syphon Soda | dilution | |
| 0.5 part | cream — Cream | other |
| 0.5 part | almond syrup — Almond Syrup | sweetener |
- Shake and strain, then fill up with a dash of syphon soda.
Invented by W. J. Tarling. 1st Prize International Cocktail Competition, London, 1930.