A south side fizz is the same as a traditional south side, but with soda water.
1¼ oz gin
½ oz lime juice
½ oz simple syrup
2 sprigs mint
Club soda
In a shaker, muddle the mint, lime juice and simple syrup.
Add the gin and fill with ice.
Shake, and strain into a highball glass filled with crushed ice.
Stir until frost appears on the outside of the glass.
Fill with club soda and garnish with another mint sprig.