Café Royal Cocktail Book by W. J. Tarling (1937, p.79)
| 0.13 part | lemon juice | acid |
| 0.25 part | gin — Seager's gin | base |
| 0.13 part | passion fruit juice | dilution |
| 1 dash | egg white | other |
| 1 dash | Grenadine | sweetener |
| 0.5 part | pineapple syrup | sweetener |
- Shake.
Doctor Johnson is Seager's gin, pineapple syrup, passion fruit juice, lemon juice, grenadine, and egg white.
Café Royal Cocktail Book by W. J. Tarling (1937, p.79)
| 0.13 part | lemon juice | acid |
| 0.25 part | gin — Seager's gin | base |
| 0.13 part | passion fruit juice | dilution |
| 1 dash | egg white | other |
| 1 dash | Grenadine | sweetener |
| 0.5 part | pineapple syrup | sweetener |
See also: Doctor