(gin-ess, g as in get)
Bought in Pint or ½ Pint sized glasses. The white froth on top is the
head and if it's too big it is sometimes called a Bishop's Collar. A
sign of a good pint is when you can see the rings of your 'gulps' down
the side of the glass. There can be much discussion on good vs bad pints
of Guinness, especially the morning after :)
it! Ask for a sample if you aren't too sure whether to get the
big or the smaller glass.