BJCP 15C
A fuller-bodied black beer with a pronounced roasted flavor, often similar to coffee and dark chocolate with some malty complexity. The balance can range from moderately bittersweet to bitter, with the more balanced versions having up to moderate malty richness and the bitter versions being quite dry.
Traditionally a bottled product. Consumers expect a stout to always have a black color; the flavor intensity from whatever made it black is what consumers expect in their beer. Not all breweries make a dry, roasty version typical of Guinness; a more balanced and chocolaty version is equally acceptable.
Guinness Extra Stout (US version), O'Hara's Leann Folláin, Sheaf Stout