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.
English muffin English muffins are a small, round, flat yeast-leavened bread which is commonly sliced horizontally, toasted, and buttered. Sources attribute the muffins to a version invented in the United States by an English immigrant, Samuel Bath Thomas, who based his muffins on a popular bread product that was sold door-to-door in Victorian era Britain. Toasted English muffins, which are often used as a breakfast food, may be served with sweet toppings – e.g., jam or honey – or savoury toppings – e.g., eggs, sausage rounds or bacon, and cheese. English muffins are also used as the bread in a variety of breakfast sandwiches, and are an essential ingredient in Eggs Benedict and most of its variations.