The Salty Mary
2 parts vodka
2 to 3 parts tonic water
2 to 3 parts grapefruit soda
Optional garnishes: Rosemary sprig and lime wedge
Moisten the rim of a highball glass with a lime wedge, then dip an edge into the rosemary salt. Fill with ice. Add vodka, tonic, and grapefruit soda . Stir to combine, then garnish as desired.