What is Beer?
Beer is one of the oldest, most widely consumed alcoholic beverages in the world. It’s a carbonated drink made from water, barley malt and hops that has been fermented to produce alcohol and unique flavours. Beer is brewed by heating and cooling water, hops and malted barley to release floral, bittering and aromatic flavours alongside the fermentable sugars that will turn into alcohol. Yeast, a microorganism, then eats the sugars to create ethanol and other by-products, including esters and phenols that add complex flavours.
Yeast Yeast is a single-celled, microscopic organism that lives within the wort (wort = the liquid created after mashing) and converts the insoluble starches into fermentable sugars. Yeast also helps to aerate the wort, which is important for the fermentation process.
The amount of yeast added to the wort determines how fast and vigorously the beer will ferment. Yeast strains are also responsible for different flavour profiles in beer, with ale yeasts producing more fruity and citrusy flavors, while lager yeasts are more neutral.
The brewing industry is a global enterprise that involves large-scale production and distribution of beer in bottles, cans, and kegs. Modern breweries use stainless steel equipment and computer-controlled systems to make beer. Barley is the main grain used in beer, but other grains and ingredients like oats, rice, wheat, corn, and sorghum are sometimes added.