I just started thinking about making some sausages from one of my books, Charcuterie, by Chef Sonnenschmidt and many of his uncured sausages call for some amount of both soy protein concentrate and plum powder. The book specifies that it's for moisture retention and binding. Does anyone have experience with this product or recommend it? One of the reasons I got into making my own sausage was that I could have a more natural product without some of the fillers often found in commercial sausages.
Besides, even if I wanted to purchase it to try I can't even find a source. His resources section lists a place for it but it's actually the California Dried Prune board which seems to be mostly for marketing purposes.