Grapefruit Margaritas (Margaritas de Toronja)

Grapefruit slices, cut in quarters
Salt
3/4 cup grapefruit juice
6 ounces tequila
2 ounces triple sec
2 cups cracked ice

Moisten rims of cocktail glasses with cut grapefruit. Put salt on a saucer. Swirl rims of glasses in salt to coat edges. Combine grapefruit juice, tequila, triple sec and cracked ice in a blender container. Blend until smooth. Pour into prepared glasses. Place a grapefruit wedge on each rim.

Makes 6 to 8 servings.