Below you can find the A chemist named cyril callister developed this trademarked food spread that's made from brewer's yeast Jeopardy Words Answer. The answer to A chemist named cyril callister developed this trademarked food spread that's made from brewer's yeast has 8 letters. This clue belongs to the Aussie odds & ends category and is part of Jeopardy Word Level 2343. If you scroll near the bottom you will find other clues and answers part of level 2343