This easy cocktail combines grapefruit juice and vodka, and comes together in a matter of minutes!
Rub rims of 8 (8-ounce) martini glasses with 8 grapefruit wedges.
Place sea salt into a shallow dish and dip martini-glass rims in the salt.
Fill martini shaker halfway with crushed ice. Add 1/2 cup vodka and 3/4 cup grapefruit juice; shake to chill.
Strain evenly into 4 of the martini glasses. Stir in 2 tablespoons club soda per glass. Repeat to make 8 drinks.
Garnish glasses with grapefruit wedges.
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