Join the folks at Empire Bar for Firkin Friday tonight. What the heck is a firkin? A firkin is a old english unit of measure used to define a 1/4 of a barrel of beer. Traditionally, firkins were wooden casks that contained ale with a faucet for dispensing. The folks at Empire Bar have a new-world firkin that they'll fill with cask-conditioned ale and sometimes lager for special events. They'll be using the firkin to celebrate American Craft Beer Week at Empire Bar. Head there early to watch the tapping, because my bet is that the beer won't last long.