- grapefruit wedge, for garnish
- coarse salt
- 1/4 cup fresh grapefruit juice
- 1 tablespoon fresh lime juice
- 1 teaspoon granulated sugar
- 1/4 cup mezcal or tequila
- 1/4 cup club soda
- Rub rim of an 8-ounce glass with a grapefruit wedge. Pour some coarse salt out onto a plate and rub the rim of the glass in the salt to coat. Combine grapefruit juice, lime juice, and sugar in prepared glass; stir until sugar is dissolved. Stir in mezcal, add some ice, and top off with the club soda. Garnish with grapefruit wedge.