Louis' Mixed Drinks with Hints for the Care & Serving of Wines by Louis Muckensturm (1906, p.90)

2 liqueur-glassesbrandy — Brandybase
0.5 grapefruitgrapefruit peel — Grapefruit half-shellbase
2 lumpssugar — Sugar lumpssweetener
  1. Turn the half grapefruit skin inside out to form a bowl, add the sugar and brandy, set the brandy on fire, then pour into a liqueur-glass and serve hot.

Café Royal Cocktail Book by W. J. Tarling (1937, p.92)

0.33 partForbidden Fruit — Forbidden Fruit liqueurbase
0.33 partgin — dry ginbase
0.33 partcreme de menthe — white crème de menthemodifier
  1. Shake and strain.

Lineage reconciliation

See also: Forbidden

For each extra person add one extra liqueur-glass of brandy and half a lump of sugar.