Sauerkraut
Sauerkraut is a Yellow-Red food.
Additional Quotes
Specific references to Sauerkraut throughout Geoff Bond's publications.
Paleo in a Nutshell — 5. Adopting the Paleo Feeding Pattern, p. 92
The other methods of preserving plant food are to be avoided: Freeze-dried (packet soups), canned (peas, green beans), pickled in salt (gherkins), syruped (fruit jams and jellies), and fermented (sauerkraut). That is not to say you can never eat these things, just do not think that they are proper food. Foods pickled in vinegar (such as onions) have lost many nutrients, but at least the pickling does not add undesirable chemicals.