Cyril P. Callister created what food spread from leftover brewers' yeast extract in 1922?
Vegemite Vegemite ( ) is a thick, black Australian food spread made from leftover brewers' yeast extract with various vegetable and spice additives. It was developed by Cyril Percy Callister in Melbourne, Victoria in 1922. The Vegemite brand was owned by Mondelez International, but was acquired by the Australian Bega Cheese group following an agreement in January 2017.
Kaiser roll The Kaiser roll (German: "Kaisersemmel" ), also called a Vienna roll ("Wiener Kaisersemmel"; as made by hand also: "Handsemmel", Slovene: "kajzerca") or a hard roll, is a typically crusty round bread roll, originally from Austria. It is made from white flour, yeast, malt, water and salt, with the top side usually divided in a symmetric pattern of five segments, separated by curved superficial cuts radiating from the centre outwards or folded in a series of overlapping lobes resembling a crown. The crisp "Kaisersemmel" is a traditional Austrian food officially approved by the Federal Ministry of Agriculture.