1 (18 ounce) boxes cake mix ( preferably yellow, white, butter golden, or vanilla)
1 (16 ounce) bags frozen mixed berries ( it can be mixed or of one specific type)
1 (12 ounce) cans citrus soda pop ( sprite and 7 up work perfect)
1 tablespoon whipped cream (optional) or 1 vanilla ice cream (optional)