Gin or Whisky Sling

Cooling Cups and Dainty Drinks by William Terrington (1869, p.195) — Terrington 1869

1. Add the gin or whisky and powdered sugar to a soda-water glass.
2. Fill with shaven ice and serve with straws.

Ice: Shaven ice

Its brevity helps document sling as a stable service grammar rather than an elaborate recipe family.

This is a stripped iced sling, distinct from the juice-heavy later Whisky Sling formula.