This December, Surly Brewing Co. will be releasing at least three different barrel-aged variants of its most popular stout in a brand new packaging format.

According to a labels filed with the Alcohol and Tobacco Tax and Trade Bureau (TTB), for the first time the Minneapolis-based brewery will be selling the variants in 16-ounce cans instead of the 750ml bottles they have historically been packaged in.

So far, there have been labels filed for three different variants:

  • Darkness Russian imperial stout aged in bourbon barrels and conditioned on chilies, chocolate, cinnamon and vanilla beans (12 percent ABV)
  • Darkness Russian imperial stout aged in rye barrels and conditioned on cacao and vanilla beans (12 percent ABV)
  • Darkness Russian imperial stout aged in rum barrels and conditioned on Arabica and Robusta coffee, coconut and vanilla beans (12 percent ABV)

Surly had previously filed a label for its 2020 Darkness, a 12 percent ABV Russian imperial stout brewed with pale ale, golden promise, crystal, dark crystal, oats, black, chocolate, and roast malts, as well as Amarillo, Columbus, and Simcoe hops and Belgian dark candi sugar and packaged in 750ml bottles.

The imperial stout has historically been released during Surly’s Darkness Day, an annual event dedicated to all thing Darkness that typically runs over an entire weekend, but is scheduled to be released this year on Halloween.

The Minneapolis-based brewery’s Darkness Series started in 2007 and has featured a different monster on the bottle every year since it was first released, with past years’ label art having depicted the Minotaur, “a screeching bat nightmare,” a mummy, the Devil, a vampire, a werewolf and the Grim Reaper. This year’s monster is a Gorgon, a “vicious female monster from Greek mythology with sharp fangs and hair of living, venomous snakes” with art drawn by artist Barbara Guttman, but the variant cans do not feature the same art as the bottle label that was filed.

According to a post on Surly’s website, the barrel-aged Darkness variants will be packaged in 16-ounce cans and are scheduled to be released in December.