Hi, alicia:
Yeast is perfectly legal--provided it tests negative--and I wonder whether our Ozzies have tested vegemite and the other barrel-bottom extract...marmite??
There has been some confusion, because the yeast C. albicans is a terrible thing and overgrowth can actually cause AS in susceptible individuals. Many sources that have suggestions to overcome candidiasis tell us to avoid yeast and all yeast products and even grapes and raisins--due to the fungus. I don't know whether all these measures are necessary, but if I had candidiasis I would follow everything the experts said--this is very difficult to get under control.
Best Regards,
John
