3ozfreshly squeezed grapefruit juice(6 tbsp) from about half a grapefruit
0.5ozfresh lime juice(1 tbsp), from about half a lime
1.5ozblanco tequilaor mezcal
2ozbrut champagneor your preferred variety
Stir together grapefruit juice, lime juice, and tequila in a glass. Add ice. Pour in champagne and gently stir again.
Garnish: I garnished each glass with a lime slice and a wedge of grapefruit on which I sprinkled kosher salt. You can salt the rim of the glass if you like, but I kept it simple with just garnishing with fruit.Scaling Up: If you make two cocktails, you'll use one whole grapefruit and one whole lime for the juices.