According to a label filed with the Alcohol and Tobacco Tax and Trade Bureau (TTB), Boulevard Brewing Co. will be releasing a new berry-inspired sour ale.

The Kansas City-based brewery is working on a barrel-aged sour ale, Bramble On, which features blackberries. Clocking in at 9 percent ABV and 10 IBUs, this ale is actually a blend of both sour ales and saisons which were aged on foeders, puncheons and wine barrels before being later refermented with blackberries for three months. This beer will be a part of the brewery’s Limited Releases Series 2021.

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