Café Royal Cocktail Book by W. J. Tarling (1937, p.183)
| 0.1 part | lemon juice — Lemon Juice | acid |
| 0.6 part | Scotch whisky — Vat 69 Whisky | base |
| 0.2 part | Drambuie | modifier |
| 0.1 part | Grenadine — Grenadine, Bols | sweetener |
- Shake.
Invented by F. Bowling.
Royal Scot is Vat 69 whisky with Drambuie, grenadine, and lemon juice.
Café Royal Cocktail Book by W. J. Tarling (1937, p.183)
| 0.1 part | lemon juice — Lemon Juice | acid |
| 0.6 part | Scotch whisky — Vat 69 Whisky | base |
| 0.2 part | Drambuie | modifier |
| 0.1 part | Grenadine — Grenadine, Bols | sweetener |
Invented by F. Bowling.