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Beer is a mixture and commodity with a history dating back to 3500 BCE. It is produced by breweries and made from materials including Hordeum vulgare, hops, water, and yeast. The beverage has the characteristic of bitterness. Its production involves specific ingredients such as hops, water, and yeast.

Nutritional information for beer includes 59 kcal of energy, 0.6 g of fat, 12.8 g of carbohydrates, and 8.7 g of proteins. It contains 1.7 g of sugars, 2.9 g of fiber, and 0.39 g of salt. The product is classified under the beers category in Openfoodfacts, with a Nutri-Score of c and a Nova classification of 3. There are 179 listed products in this category.

The subject is associated with the Unicode characters 🍺 and 🍻. It holds the 2022 Harmonized System Code 2203. Beer is referenced by 4,364 other encyclopedia articles. It is described by sources including the Pauly–Wissowa, Brockhaus and Efron Encyclopedic Dictionary, and the Encyclopædia Britannica 11th edition. The topic has a carbon footprint of 1.