Chocolate-like in appearance but with a flavor like nothing else on earth, the yeast extract spread Vegemite is essentially synonymous with Australia. Hired by the ambitious Fred Walker to create a copy of the British spread, Marmite (which coincidentally has an adorable Twitter feed), food scientist Cyril Callister developed Vegemite in 1923. Based on a mutual interest in developing a processed cheese with a longer shelf life, Walker joined forces with James Kraft, forming the Kraft Walker Cheese Company in 1926, whose Melbourne factory and head offices are pictured below (image 1). High in B vitamins during an historical moment when vitamins themselves were a new scientific phenomenon, Vegemite was from the beginning marketed by the Fred Walker Company as nutritious, particularly for children. For example, a Vegemite advertisement from the 1920s assured consumers that “there is no food richer in vitamins than Vegemite” and a point of sale advertisement from the 1930s emphasized the spread’s nutritional content and the themes of vitality, health, and childhood (image 2). Despite its vitamin content, consumers were initially slow to …