I am trying new meats and i was trying to become more educated in my selections. I feel very confident in my rubs and sauces with boston butts but i was wanting to try some spare ribs now. I went to Sams to do some research on meat selections. I have been watching many prep YouTube videos on the proper techniques of Spare rib prep. While browsing at the meat selection i ran across pork spare ribs that indicate Bone off. I was wondering if this means they are trimmed but still have the membrane on them.