From Death & Co
Garnish: 1 lemon twist
Shake all the ingredients (except the club soda), then strain into a highball glass filled with ice cubes.
Top with club soda.
Garnish with the lemon twist and serve with a straw.
Created by Phil Ward, 2008. The sling is one of the oldest cocktail templates, combining booze with lemon, sugar, and water, drinkable hot or cold. Named as a loose interpretation after the Czech inspiration for the novel Catch-22.