This one from Lucius Beebe’s Stork Club Bar Book of 1946. He includes it in the “Morning at the Stork Club” chapter, but there’s no reason to restrict its service to the hours before noon. The Southside Fizz is really just a pleasant, minty lemonade — unless you’re employing a particularly potent gin, it goes almost unnoticed — suitable whenever a refreshing long drink is indicated.
Juice of 1/2 lemon
2 sprigs mint
1 tsp. sugar
Shake well, strain into a highball glass and fill with seltzer.
Decorate with a sprig of mint, and a cherry if you’re feeling saucy.
The quantity of mint should be adjusted depending on the potency of your particular strain of leaf. Two may well be too little. Flakes of leaf will be broken off by the ice when shaking … for the clearest drink, and one which won’t leave unsightly vegetable matter clinging to your guests’ teeth, you may wish to strain through a mesh sieve.