2 cups watermelon, chopped or watermelon puree
2 cups lemon-lime soda, cold
1 tablespoon grenadine
1/2 cup frozen mixed berries, optional, use instead of ice
Fresh mint sprigs, for garnish
Put watermelon, lemon-lime soda, and grenadine into a blender.
Blend for 20 to 30 seconds. Use a strainer to strain into pitcher.
Divide frozen berries between 4 glasses. Pour juice over berries. Garnish with a straw and a sprig of mint.