Fermentation lock
Videos
A fermentation lock, colloquially air lock or just lock, is a device used in the production of fermented beverages, especially beer brewing and wine making.
A homebrewing vessel with air lock
A 25 L (6+1⁄2 US gal) glass carboy with lock acting as a fermentation vessel for beer
Brewing
Videos
Brewing is the production of beer by steeping a starch source in water and fermenting the resulting sweet liquid with yeast. It may be done in a brewery by a commercial brewer, at home by a homebrewer
Fermentation lock
…A fermentation lock, colloquially air lock or just lock, is a device used in the production of fermented beverages, especially beer brewing and wine making. Locks work when filled halfway with water, allowing carbon dioxide released during fermentation to escape the brewing vessel while not…
The Alulu beer receipt records a purchase of "best" beer from a brewer, c. 2050 BC, from the Sumerian city of Umma in Mesopotamia (ancient Iraq).
Malted barley before kilning or roasting
Hop cone grown in a hop field, Hallertau, Germany
A mash tun at the Bass Museum in Burton-upon-Trent