Café Royal Cocktail Book by W. J. Tarling (1937, p.87)
| 0.2 part | lemon juice | acid |
| 0.6 part | gin — Booth's dry gin | base |
| 0.2 part | curacao — blue curaçao | modifier |
- Shake well.
The Emerald is Booth's dry gin, lemon juice, and blue curaçao.
Café Royal Cocktail Book by W. J. Tarling (1937, p.87)
| 0.2 part | lemon juice | acid |
| 0.6 part | gin — Booth's dry gin | base |
| 0.2 part | curacao — blue curaçao | modifier |
See also: Esmerald