from Death & Co
Shake all the ingredients (except the club soda) with ice, then strain into a highball glass filled with ice cubes. Top with club soda. Garnish with the lemon twist and serve with a straw.
PHIL WARD, 2008 The sling is a one of the oldest cocktail templates, combining some kind of booze with lemon, sugar, and water, which could be drunk hot or cold. I named this loose interpretation after the Czech inspiration for the novel Catch-22.—PW