What is Vegetarianism and beer?

Beer is often made from barley malt, water, hops and yeast and so is often suitable for vegans and vegetarians. Some beer brewers add finings to clarify the beer when racking into a barrel. Finings can include plant-derived products, like Irish moss, or animal-derived products, like isinglass and gelatin.

Most breweries do not reveal if they do or do not use animal products in the processing of their beers; some exceptions are Samuel Smith, Heineken, Harp Lager, Anheuser-Busch, the Marble Brewery in Manchester, the Black Isle Brewery, and Black Sheep Brewery, all of whom have declared they make vegetarian and/or vegan beer.