BLACKBERRY LIME MARGARITAS
2 cups (about 11 ounces) blackberries
2 cups ice cubes
1/2 cup fresh lime juice
3/4 cup white tequila
1/4 cup sugar
Puree blackberries in a blender. Force puree through a fine sieve into a small bowl and discard solids. In a cocktail shaker, combine 1/2 cup puree and remaining ingredients and shake well. Strain drink into 4 stemmed glasses.
Serves 4.