The Old Waldorf-Astoria Bar Book by Albert Stevens Crockett (1935, p.89)

1 jiggerScotch whisky — Scotchbase
1 lumpsugar base
0.5 jiggerwater — hot waterdilution
  1. Dissolve the sugar, add Scotch, ignite, and pour back and forth while blazing.

See also: Hot-with Flames