We finally made it to the Tied House's First Friday Firkin last week. In case you don't know, "firkin" refers to the size of the barrel the beer is made in. These once a month pleasures are made in the style of Real Ale - all the carbonation is a natural by product of the fermentation process with no CO2 added. This month's firkin was a nice, light, brown ale. Low in alcohol (3.8% ABV) and high in flavor. It was smooth, with only a slight hint of hops and served in proper pint sized glasses to boot!
The only downsides, really, were that the pints were not always full (illegal in Britain!) and the firkin was rolled in right before tapping, so each glass ended up with yeast in the bottom. I don't like to drink the yeast, because I'll end up with a headache.
Buyer beware, as expected, the firkin pints were not subject to normal happy hour pricing. No complaints on that, though, as the beer was worth every penny!