"Fermented cabbage" refers to cabbage that has undergone a process called fermentation, where it is preserved with the help of natural bacteria. The cabbage develops a tangy and sour taste during fermentation. Full definition
I've noticed that some people that don't like the taste of typical fermented cabbage dishes end up really liking the fermented carrots or beets instead. (truthaboutabs.com)
Made from fermented cabbage and occasionally other vegetables, sauerkraut is not only extremely rich in healthy live cultures, but might also help with reducing allergy symptoms. (saragottfriedmd.com)
After some hesitation, I've started to drink fermented cabbage juice. (realfoodforager.com)