Cyril P. Callister created what food spread from leftover brewers' yeast extract in 1922?
Cyril P. Callister Cyril Percy Callister (16 February 1893 – 5 October 1949) was an Australian chemist and food technologist who developed the Vegemite yeast spread.
Emil Gerbeaud Emil Gerbeaud (French: Émile Gerbeaud , Carouge, Canton of Geneva, Switzerland, 22 February 1854 – Budapest, Hungary, 8 November 1919) was a Swiss-born Hungarian confectioner, chocolate producer, industrialist and entrepreneur. Several famous traditional Hungarian cakes were first introduced by him like the "macskanyelv" (English: cat tongue ), the "konyakos meggy" (English: cognac sour cherry ), the "csokoládé drazsé" (English: chocolate dragees ) and he was the first in Hungary who sold French cakes filled with custard. The "zserbó" cake, a well-known product of the Café Gerbeaud is named after him.