For the orange-flavored liqueur, you can use your choice of triple sec, Grand Marnier, Cointreau or Curaçao.
The Beach Issue
1 750-ml bottle fruity red wine
¼ cup brandy or cognac
¼ cup orange-flavored liqueur
¼ cup sugar
1 10-ounce bag frozen mixed berries (about 2½ cups)
Fill 2 ice cube trays with the red wine and freeze until mostly solid, at least 6 hours and preferably overnight.
Combine the brandy, orange liqueur and sugar in a small container with a lid. Refrigerate until ready to make the sangria.
Combine the frozen berries, red wine ice cubes and chilled brandy mixture in a blender. Blend on high until combined, and thick and slushy. Pour into a pitcher and serve.