You can wrap them individually or if your doing a lot of ribs or a handful then put them into a disposable aluminum pan, fill the bottom with what ever you want to and wrap the top tight. You can even put your favorite soda in there. Its just a steaming process really. The spritzing is really only done for the caramelization on the ribs. When a lot of guys dont use a lot of brown sugar in their rub, the apple juice or any juice has natural sugars in it which will add moisture to the cooking environment, and give ribs better color. Hope this helps you out for the next go around.