According to a label filed with the Alcohol and Tobacco Tax and Trade Bureau (TTB), AleSmith Brewing Co. is working on releasing Heavy Forge: New Boysen Town, a 13.1 percent ABV imperial stout conditioned on boysenberries, cacao nibs and coconut.

The new stout will be packaged in 750ml bottles and will be an exclusive release for members of AleSmith’s Order of the Anvil club, which is the brewery’s membership club that debuted in 2017.

An email sent to the brewery for additional information was not immediately returned.