Der perfekte Mixer by Martin Heile (1950, p.33) — Martin Heile 1950

0.5 glassbay rum — Bayrumbase
lemon juice — Zitronensaftbase
1 glasswhite rum — weiBer Rumbase
banana — Bananenschnittengarnish
grapes — Melisse oder Weinbeerengarnish
1 glasssyrup — Sirupsweetener
  1. Build over crushed ice in a large glass and serve with banana and herbs or grapes.

Garnish: Banana and balm or grapes

Ice: Crushed ice

See also: Mint-Julep, Whisky-Julep

The source gives ingredients only; the standard julep service over crushed ice is inferred.