What is one of the oldest beverages humans have produced with recipes found in Sumerian writings?
History of beer Beer is one of the oldest beverages humans have produced, dating back to at least the 5th millennium BC in Iran, and was recorded in the written history of ancient Egypt and Mesopotamia and spread throughout the world.
Barm Barm is the foam, or scum, formed on the top of liquor – fermented alcoholic beverages such as beer or wine, or feedstock for hard liquor or industrial ethanol distillation – when fermenting. It was used to leaven bread, or set up fermentation in a new batch of liquor. Barm, as a leaven, has also been made from ground millet combined with must out of wine-tubs and is sometimes used in English baking as a synonym for a natural leaven. Various cultures derived from barm, usually "Saccharomyces cerevisiae", became ancestral to most forms of brewer's yeast and baker's yeast currently on the market.