Why they put a small ball in the Guinness Draught Beer?
A Stout, such as Guinness has a key element in the wonderful foamy head they produce. This ball helps recreate this when pouring from a can. http://recipes.howstuffworks.com/question446.htm -QUOTE- A stout like Guinness has a creamier, longer lasting head than a canned lager beer. In addition, Guinness is less fizzy than a regular lager beer. Guinness is canned with a mixture of carbon dioxide and nitrogen. Nitrogen is not absorbed into the beer nearly as well as carbon dioxide, so even though a can of Guinness may be at the same pressure as a can of lager, it contains less CO2 (and is therefore less fizzy) because the nitrogen makes up some of the pressure. Because a beer like Guinness contains less dissolved CO2, if you poured it from a can with no widget, the head not be very thick because most of the CO2 would stay dissolved. The purpose of the widget is to release the CO2 from some of the beer in the can to create the head. The widget is a plastic, nitrogen-filled sphere with a ti
