Café Royal Cocktail Book by W. J. Tarling (1937, p.122)
| 0.13 part | lemon juice | acid |
| 0.25 part | gin — Booth's dry gin | base |
| 0.25 part | sloe gin — Booth's sloe gin | base |
| 0.13 part | curacao — Bols white curaçao | modifier |
| 0.25 part | dry vermouth — Noilly Prat vermouth | modifier |
- Shake and strain into a cocktail glass.
Invented by W. J. Tarling and dedicated to E. Johansen of the Café Royal.