About Town Cocktail Book by Joe Fitchett (1925, p.29) — Optional Rum
| 4 tablespoonfuls | grapefruit juice — Grapefruit Juice | base |
| rum — Add as much rum as desired. | base | |
| ginger ale — Ginger Ale | dilution | |
| 1 teaspoonful | Grenadine | sweetener |
| 2 tablespoonfuls | Sugar syrup — Sugar Syrup | sweetener |
- Pour the grapefruit juice, grenadine, and syrup on chopped ice in tall glasses.
- Fill with ginger ale, stir, add rum as desired, and garnish with a cherry.
Garnish: Cherry
Ice: Chopped ice
This matters because it preserves a temperance-adjacent long drink whose alcohol is optional rather than fixed.