The Artistry of Mixing Drinks by Frank Meier (1936, p.92)

1 glassApplejack — Apple Jack or Calvadosbase
1 teaspoonsugar — Sugarbase
water — Boiling waterdilution
1 pieceice — Iceother
  1. Dissolve sugar in a little water in a small tumbler, add a piece of ice and the spirit, stir, and serve with a glass of water.

Ice: Ice

Page 65 gives a hot form with boiling water and baked apple.