these four steps help you achieve the perfect pint of Guinness: Holding the glass at a 45-degree angle to the tap, open the tap fully by bringing the handle all the way down toward you.

Much like the wide mouth of a red wine glass allows its big, bold flavors to develop after pouring, beer enthusiasts know that you shouldn't just dump any and every brew into a pint glass.

The beloved party trick involves drinking the stout until the line of liquid has reached the correct spot, which is the half way mark of the G embellished on a Guinness pint glass. But amid the ...