Grapefruit margaritaGRAPEFRUIT MARGARITA Wedge of lime 2 teaspoons coarse margarita salt 14 ounces ruby red grapefruit juice, with pulp (about 3 medium grapefruits) 1 ounce lime juice 5 ounces reposado tequila 2 ounces triple sec 4 slices grapefruit or twists 1. Run a lime wedge halfway around the rims of four margarita glasses and dip into salt. Set aside. 2. Combine 7 ounces grapefruit juice, one-half ounce lime juice, 2 1/2 ounces tequila and 1 ounce triple sec in a cocktail shaker. Shake over ice until chilled. Strain into two ice-filled, salt-rimmed margarita glasses. 3. Garnish with a twist or slice of grapefruit. Repeat to make two more cocktails.