This drink comes from the Denver Hilton, circa 1960, via Beachbum Berry Remixed.
1 oz light rum
1 oz orange juice
0.5 oz lime juice
0.5 oz falernum
0.25 oz cherry Herring
Combine all ingredients, shake with ice, then pour unstrained into a chilled rocks glass with more crushed ice.
The nose is dominated by the falernum's spice notes. The sip opens with sharp citrus acidity and vanilla from the rum, which segues into the ginger spice of the falernum, inflected by dark fruit from the Heering.
This drinks verges towards the dreaded 'muddled flavor profile' that late-stage tiki drinks often fell prey to. However, there is a distinct evolution of flavors, which keeps it from falling apart. I would suggest using falernum syrup in this one rather than falernum liqueur, because the stronger ginger note from the alcoholic version tends to overwhelm the other components.