Whether or not you remove the membrane off of ribs should be based on your own preference. Some claim that the membrane needs to be removed in order for the flavor to penetrate the ribs. Still, others argue that removing the membrane allows the fat to render while the ribs cook resulting in ribs that are less tender. Personally, I've tried both ways, and I now leave the membrane on the ribs. I enjoy both the taste andd the texture of the membrane. I know others do as well!