Guinness is a celebrated Irish dry stout that originated in the Dublin brewery of Arthur Guinness. When Guinness acquired his brewery, he famously signed a 9,000-year lease that fixed his annual rent at 45 pounds. From 1799, the brewery produced only its distinctive, dark, creamy Guinness stout, which became known as the national beer of Ireland. Although Guinness stout may appear to be black, it is officially a very dark shade of what? Discuss
Source: The Free Dictionary