Recipes for Mixed Drinks by Hugo R. Ensslin (1917, p.20) — Ensslin 1917
| Grapefruit juice (fresh) — Juice of a small piece of grapefruit | acid | |
| 0.5 drink | dry gin — Dry Gin | base |
| 0.5 drink | Italian vermouth — Italian Vermouth | base |
| 3 dashes | Maraschino liqueur — Maraschino | modifier |
- Shake well in a mixing glass with cracked ice.
- Strain and serve.
Ice: Cracked ice
This matters because it keeps grapefruit in the pre-war aperitif field as a small structural accent rather than a dominant juice base.
The fresh citrus note slightly loosens the Martini-style field without turning the drink into a full sour.