Louis' Mixed Drinks with Hints for the Care & Serving of Wines by Louis Muckensturm (1906, p.89)

2 liqueur-glassesbrandy — Brandybase
0.5 orangeOrange peel — Orange half-shellbase
2 lumpssugar — Sugar lumpssweetener
  1. Turn the half orange 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.

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