Brewing

Lore & Background

Brewing is the production of beer through a multi-step process that begins by steeping a starch source, most commonly cereal grains like barley, in water and then fermenting the resulting sweet liquid with yeast. This can be carried out commercially in a brewery, at home by a homebrewer, or as a communal activity. The basic ingredients are water, a fermentable starch source such as malted barley, brewer’s yeast, and hops for flavouring, which offset the malt’s sweetness. Adjuncts like maize, rice, or sugar are sometimes used to reduce cost or add specific features, such as wheat to help retain a beer’s foamy head. The ground cereal mixture is called grist or grain bill. The brewing process includes malting, milling, mashing, lautering, boiling, fermenting, conditioning, filtering, and packaging. Fermentation can be warm, cool, or spontaneous, and may occur in open or closed vessels, with secondary fermentation possible in casks or bottles. Additional methods include Burtonisation, double dropping, and Yorkshire Square, along with post-fermentation treatments like filtering and barrel-ageing. Archaeological evidence shows brewing has taken place since at least the 11th millennium BC, with prehistoric peoples and later civilizations in ancient Egypt, China, and Mesopotamia producing beer. In Mesopotamia, the brewer’s craft was uniquely sanctioned and protected by female deities: Ninkasi oversaw production, Siris was a metonym for beer, and Siduri, appearing in the Epic of Gilgamesh, covered enjoyment. Early evidence includes a 6,000-year-old Sumerian seal depicting figures drinking beer through straws, and chemical analysis of pottery from Godin Tepe in Iran showing barley beer from about 5,500 years ago. A 3,900-year-old Sumerian poem honouring Ninkasi contains the oldest surviving beer recipe, describing production from barley via bread. The earliest cereal-based beer brewing has been found at Raqefet Cave in present-day Israel, where stone mortars indicate Natufian people brewed wheat- or barley-based beer around 13,000 years ago, likely for ritual feasts, predating domesticated cereals. In medieval Europe, brewing was largely a household activity, though also produced commercially and in monasteries. The Industrial Revolution shifted production from artisanal to industrial, with hydrometers and thermometers giving brewers greater control. Today, the brewin

Reader's Guide

Brewing's significance lies in its deep historical roots and its role in the development of civilization, as the invention of bread and beer has been argued to be responsible for humanity's ability to develop technology and build civilization. The basic ingredients—water, a fermentable starch source such as malted barley, brewer's yeast, and hops—have remained consistent, though adjuncts like maize, rice, or sugar may be used to reduce cost or add features. The brewing process includes malting, milling, mashing, lautering, boiling, fermenting, conditioning, filtering, and packaging, with three main fermentation methods: warm, cool, and spontaneous. During the Industrial Revolution, production moved from artisanal to industrial manufacture, and domestic manufacture ceased to be significant by the end of the 19th century.

Did You Know?

• In Mesopotamia, the brewer's craft was the only profession with divine protection from female deities, including Ninkasi.
• Hops were used in beer by the 7th century in Carolingian monasteries, but widespread cultivation is not recorded until the thirteenth century.