WATERFORD, Ireland (Reuters) – The secret "essence of Guinness" has been the subject of more bar room speculation than possibly of any other beer in the history of brewing. <br />
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For centuries, a mysterious ingredient has been used to make Ireland’s famous creamy black stout. Until now, the undisclosed component has been a closely guarded secret behind the imposing walls of the drink giant’s St. James’s Gate headquarters in Dublin. <br />
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But soaring demand from Africa, where Guinness is seen as a macho drink and nicknamed "Viagra" after the virility drug, has led to severe capacity constraints. That in turn has forced the company for the first time to let the secret slip away from Dublin, and into a $50 million modern plant in Waterford in the southeast.<br />
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Read the full story at <a href="http://www.reuters.com/newsArticle.jhtml?type=topNews&storyID=4478206"><strong>Reuters</strong></a>
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