Café Royal Cocktail Book by W. J. Tarling (1937, p.116)
| 0.75 part | gin — dry gin | base |
| 1 dash | lemon juice | base |
| 0.25 part | rum — Daiquiri rum | base |
| 1 dash | syrup | sweetener |
- Shake and strain.
Jack Kearn's is lemon juice, syrup, Daiquiri rum, and dry gin.
Café Royal Cocktail Book by W. J. Tarling (1937, p.116)
| 0.75 part | gin — dry gin | base |
| 1 dash | lemon juice | base |
| 0.25 part | rum — Daiquiri rum | base |
| 1 dash | syrup | sweetener |
See also: Jack