This thirst-quenching cocktail was said to be created by a bartender from Chihuahua, Mexico, in the 1940s.
Preparation time: 10 minutes
Coarse salt (optional)
4 ounces tequila, divided
2 ounces orange-flavored liqueur, such as Cointreau, divided
3 cups grapefruit juice, divided
4 grapefruit slices for garnish
1. Wet the rims of 4 glasses and coat with coarse salt (if desired); fill the glasses with ice. Pour 1 ounce tequila and 1/2 ounce liqueur into each. Top each glass with 3/4 cup grapefruit juice and stir. Garnish with a slice of grapefruit.