Beer is a natural beverage obtained by fermenting cereals such as barley, rice and corn. From these cereals a liquid extract known as wort is brewed which contains fermentable sugars that are converted by brewers yeast (a unicellular microorganism of the fungus family) into alcohol and carbon dioxide (CO2).

Beer is sensitive to light, heat and movement. It is recommended to be stored in a cool and dark place to avoid changes in its flavor.