Today’s beer is Murphy’s Stout. Like the Wexford Irish Cream I reviewed yesterday, Murphy’s comes in a can with a nitrogen widget. When opened, the widget releases the nitrogen into the beer and turns pouring it into an event. The Japanese can keep their tea ceremony, crack open one of these and see what makes the lads in Ireland say, “if you’re lucky enough to be born Irish, you’re lucky enough.” So what happens when you start the pour? In this case you’re greeted by a dark, almost black beer with a not quite white head. The nitrogen bubbles in the beer begin to wash down the inside of the…