"We are one of the only non-breweries in town that is making firkins a regular thing," says Drew Watson, who opened Hops & Pie in September with his wife, Leah. (For some of the breweries who have Firkin Friday events, look below.)
Firkins are small, nine- to ten-gallon kegs popular in the United Kingdom. Breweries often take one of their regular beers and add ingredients to a firkin to put a new spin on it. Then the contents are served cask style, meaning they don't have added carbonation from a tap.
"They take a regular beer and church it up," Watson says.
Today at 6 p.m., Hops & Pie will tap two firkins from Left Hand Brewing. The first is a keg of Twin Sisters Double IPA dry hopped with a extra load of Magnum hops. The second is a keg of Fade to Black, Left Hand's smoked winter seasonal.
Last month, Hops & Pie debuted its Firkin Fridays with a cask of double dry-hopped Gordon from Oskar Blues; it was one of the only times that the Longmont brewery has served a firkin outside of its own establishments.
Watson said it was emptied in just over an hour.
Wynkoop Brewing Company taps a new firkin every Friday around 4:30 p.m. Examples of past firkins include an ESB spiked with ginger and a coconut vanilla stout. Firkin master Jason Zumbrunnen is planning a raspberry chocolate milk stout today.
Dry Dock Brewing in Aurora celebrates Firkin Friday each week around 3 p.m. Today, the brewery will tap a firkin of its Naked Porter that's been amped up with more than a pound of toasted coconut.
City 'O City periodically taps firkins from Great Divide, the Wynkoop and other breweries.
Great Divide Brewing also taps the occasional firkin.