Pink Grapefruit Margaritas

If you like a salt rim on the glasses, rub the lime around the edge of the glass and then dip the rim of each glass lightly in a plate of kosher salt . Set aside to dry. Combine the grapefruit juice, lime juice, orange liqueur , and ice in a blender and puree until smooth. Pour into a large pitcher and stir in the tequila . If youre not serving the margaritas in salted glasses, stir 1/4 teaspoon of salt into the pitcher of margaritas. Believe me, it will make a difference! Serve ice cold.