Café Royal Cocktail Book by W. J. Tarling (1937, p.74)
| 0.2 part | lemon juice | acid |
| 0.1 part | Calvados — Calvados | base |
| 0.4 part | gin — Booth's gin | base |
| 0.1 part | curacao — blue curaçao | modifier |
| 0.2 part | dry vermouth — French vermouth | modifier |
| 1 dash | Gomme syrup | sweetener |
- Shake.