Guinness

Guinness is an Irish stout beer produced by Diageo. It originated in 1759 when Arthur Guinness signed a lease for the St James's Gate Brewery in Dublin, Ireland, committing to brew there for 9,000 years. The brewery grew to supply markets in Europe and beyond, and by the 19th century Guinness had become a major international brand.

Guinness is a stout, characterized by its dark color from roasted barley and a creamy head produced by nitrogenation. The draught is typically poured to release a velvety mouthfeel, often via a two-part pour. In cans and bottles, a widget or nitrogen system is used to recreate the draught experience.

Variants include Guinness Draught, Guinness Extra Stout, and Guinness Foreign Extra Stout, with differences in strength and flavor. The brand uses a harp as its symbol, linked to the Brian Boru Harp, and features distinctive packaging and advertising.

Guinness is part of Diageo since 1997 after the merger with Grand Metropolitan. It has a global footprint and is among the most widely consumed stouts. Its flagship store at St James's Gate in Dublin operates as a visitor center and museum.