Guinness Beer is an Irish dry stout that originated in the brewery of Arthur Guinness at St. James’s Gate, Dublin, Ireland, in 1759.
It is one of the most successful alcohol brands worldwide, brewed in almost 50 countries, and available in over 120.

Guinness’s flavor derives from malted barley and roasted unmalted barley, a relatively modern development, not becoming part of the grist until the mid-20th century. For many years, a portion of aged brew was blended with freshly brewed beer to give a sharp lactic acid flavor. Although Guinness’s palate still features a characteristic “tang”, the company has refused to confirm whether this type of blending still occurs. The draught beer’s thick, creamy head comes from mixing the beer with nitrogen and carbon dioxide.

Guinness Beer Composition

Guinness stout is made from water, barley, roast malt extract, hops, and brewer’s yeast. A portion of the barley is roasted to give Guinness its dark color and characteristic taste. It is pasteurized and filtered.