Coffee Compared to Guinness

The word on the street is coffee tastes like the Irish beer Guinness, but is this really true. I would say the reason people say Guinness tastes like coffee is because both beverages have a rich bitter taste. After experiencing a trip to a Guinness Factory, due to the fashion they malt their barley and also because it is a stout. Barley is one of the substitues used in coffee so they are similar in this aspect.