Cocktails Bar La Florida by Constante Ribalaigua Vert (1934, p.132)

0.5 partgin — Gordon ginbase
0.33 partgrapefruit juice base
1 teaspoonMaraschino liqueur — maraschinomodifier
0.5 whiteegg white other
0.5 teaspoonsugar sweetener
  1. Shake well and strain into a cocktail glass.

Ice: Cracked ice