Beer is an alcoholic beverage produced by fermented starches. It is one of the oldest, alcoholic beverages known on Earth, having been brewed for thousands of years. It is most often made from malted barley, hops, yeast and water, and is usually carbonated.
The Pioneer Pub in Pike City on Cestus III was noted for its own beer, called Homebrew, which was generally only served following a win by the Pike City Pioneers baseball team. (ST novel: Articles of the Federation)