Café Royal Cocktail Book by W. J. Tarling (1937, p.97)
| 0.33 part | lemon juice | acid |
| 0.67 part | gin | base |
| 0.5 slice | Orange — orange slice | garnish |
| 1 dash | Gomme syrup | sweetener |
- Shake. Egg white or soda may be added if required.
Gin, Sour is gin, lemon juice, and gomme syrup, with optional egg white and soda.
Café Royal Cocktail Book by W. J. Tarling (1937, p.97)
| 0.33 part | lemon juice | acid |
| 0.67 part | gin | base |
| 0.5 slice | Orange — orange slice | garnish |
| 1 dash | Gomme syrup | sweetener |
See also: Gin Skin