Bartenders' Guide: How to Mix Drinks by Wehman Bros. (1912, p.50)

1 wine-glassScotch whiskey base
1 lumpsugar — Sugarbase
1 tablespoonginger ale — Ginger aledilution
2 wine-glasswater — Boiling waterdilution
  1. Combine the sugar, boiling water, Scotch whiskey, and ginger ale in a hot-water glass and serve.

The heading and formula are slightly at odds in the source text; this capture preserves the printed witness.