One or more breweries are present in San Marcos. It is a building or a factory that produces beer. The scale of operations can vary tremendously, as can the kind of processes, degrees of automation, and kinds of beer produced. On one hand are large scale breweries such as Bud Light and Budweiser, on the other are microbreweries and brew pubs. The most popular kind of beer produced is pale lager. Some other kinds that may be brewed include pale ale, India Pale Ale, red ale, brown ale, stout, barleywine.