The brand name of a Kraft Foods yeast extract product, which is wildly popular in Australia. Vegemite was the brainchild of a young Australian named Fred Walker that was created in 1922 by his company's chief scientist, Dr. Cyril Callister. This thick, dark brown, intensely salty paste is flavored with a variety of ingredients including celery and onions. It's used as a bread spread and is a favorite on breakfast toast. Australians are weaned on it but, for all but the initiated, it's definitely an acquired taste. Vegemite can be found in some specialty gourmet stores and is available through mail order. See also marmite.