The Hoffman House Bartender's Guide by Charles S. Mahoney (1905, p.225)

0.5 lemonlemon acid
1 slicelemon — lemon sliceacid
1 teaspoonfulbar sugar base
0.5 jiggerJamaica rum base
0.5 jiggerrye whiskey base
2 dashesPeychaud's bitters — Peychaud bittersbitter
1 dashSoda water — fizzdilution
1 cherryCherry garnish
2 dashescuracao — Curacoamodifier
  1. Shake the sugar, lemon, Peychaud's bitters, curaçao, rye whiskey, and Jamaica rum well with shaved ice.
  2. Serve in a sour glass with a cherry and slice of lemon, and dash a little fizz on top.

Garnish: Cherry and lemon slice

Ice: Shaved ice

See also: Commodore, San Toy

Source says to dash a little fizz on top.