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The third most common drinking overall, behind water and tea, is beer, one of the oldest and most popular alcoholic beverages in the world. It is made by brewing and fermenting carbohydrates primarily sourced from cereal grains, most frequently malted barley, though it can also be made from wheat, maize (corn), rice, and oats. Beer is created during the brewing process by fermenting the starch sugars in the wort, which results in the production of ethanol and carbonation. In addition to being sold in bottles and cans, beer is frequently served on draught, specially in pubs and bars.There are thousands of smaller manufacturers, from brewpubs to local breweries, who make up the world's largest industry for brewing. It is dominated by a few large international corporations. 4% to 6% alcohol by volume (ABV) is the typical strength of modern beer, while it can vary from 0.5% to 20%, with some brewers producing beer with an ABV of 40% or more. Many cultures around the world have a strong...