I have made several types of sausages using collagen casings, both fresh sausages and smoked: pepper sticks, small diameter breakfast links, pepperoni's and etc. I have experience the same problem with all these sausages: The casing does not bind with the meat and peels off. The callagen casings on fresh sausages peel while cooking. The collagen casings on the smoked products are fine when taken out of the smoker, but after freezing and subsequent thawing, the casings peel off. The same sausages made in the same manner with natural (sheep) casings work wonderfully.
Does this happen to anyone else? What am I doing wrong?