Hate to break it to ya, but bread and crackers, or anything made with flour, is a no-no, especially wheat flour. It will feed candida as readily as sugar. I would not use ketchup (too sugary), but mustard can be ok if it is a good (natural) brand. Some cheese may not be too much problem, such as cottage and mozarellam, as they are not aged for very long, if at all. Small amounts of fruit are fine IMHO, but others may disagree. . .