Even fermented plums become more digestible with no diarrhea. The sorbitol must be eaten or altered by bacteria. I do not know if I'm arranging my ferments properly. Whether it's meat, nuts, fruits, I'm sure ancient trial and error established the right temperature, ph, bacteria along with methods to control these conditions. Much wisdom is lost and forgotten, and I must relearn at my own peril, so I see why one would add meat to sauerkraut. Sauerkraut factors are more known than say, fermented fish.