Our take on a French 75, this grapefruit libation, topped with cava or prosecco, is a real eye-opener − bracing and only slightly sweet.
Make-ahead tip: Juice grapefruits and mix cocktail the day before. Combine all but cava in a pitcher (add the bubbles just before serving).
2½ cups grapefruit juice (or juice of 4 grapefruits)
6 ounces gin
1 bottle dry cava or prosecco
Himalayan salt for rim
Dip rim of each glass into grapefruit juice, then into a thin layer of salt (about 2 tablespoons) on a saucer.
Mix juice, gin and cava in a large glass pitcher.
Add ice and serve.