Jack's Manual by J. A. Grohusko (1910, p.88)

1 pieceice base
Soda water — fizz waterdilution
1 portionItalian vermouth — vermouthmodifier
  1. Put the ice and vermouth in the glass.
  2. Fill with fizz water and serve.

Ice: 1 piece ice

See also: Vermouth Frappe, Scotch High Ball