I found that yeast is used in a lot of processed (boxed) foods as well as breads. It's in Campbell's soups as well as many things that you don't even realized. Read labels. Eat things in moderation, that's what my dietitian told me--don't stress over certain foods but limit the intake of them. This was particularly important because I have kidney stones (oxylase content) and foods that are good for gout are bad for kidney stones. It was very distressing at the first diagnosis of gout because I was wondering what I could eat--i.e. I will eat a sweet potatoe (high in oxylase) low in purines but not too often. I hope some of this info helps people because I know how absolutely painful GOUT is!