Ingredients
1/2 cup fresh lime juice
3 tablespoons superfine sugar
8 thin jalapeno slices
2 cups fresh grapefruit juice
Ice
Seltzer
Grapefruit slices, for garnish
Tequila or mezcal, optional
Preparation
Muddle lime juice, sugar, and jalapeno slices, pressing on chiles and stirring until sugar dissolves. Stir in grapefruit juice. Pour halfway up ice-filled glasses; top with seltzer. Garnish with grapefruit slices.
To spike it: Add 1 ounce tequila or mezcal per serving, before the seltzer.
