Graham cracker refers to a type of cracker that was originated by Rev.
Sylvester Graham, a
Presbyterian minister, in the early
1800s as a "
health food[?]". It was originally made solely with whole-wheat
flour, but many modern imitiation Graham crackers contain no whole-wheat flour at all, and are based on bleached, refined white flour, which the Rev. Graham implacably opposed. Reverend Graham termed the unsifted whole-wheat flour he used
Graham flour.
His original "Graham bread" was made with the intent of supressing carnal urges, which he believed were the source of many maladies (He also warned that ketchup and mustard caused insanity).