Grapes

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. The price includes crate and bottle deposits. If crates and empty bottles are returned, refunds will be issued for returned items. ...