News of of another collaboration between Westbrook Brewing Co. and Evil Twin Brewing has come to light.

The new beer is Maple Bourbon Barrel-Aged Mini Growler, a 10.5 percent ABV imperial stout aged in maple bourbon barrels. The new stout is a variant of an earlier collaboration between the two breweries named Mini Growler (12 percent ABV) that was first released in 2012 and has been packaged in 22-ounce bottles.

According to a label filed with the Alcohol and Tobacco Tax and Trade Bureau (TTB), Maple Bourbon Barrel-Aged Mini Growler will be packaged in 22-ounce bottles. An email sent to both breweries for additional information was not immediately returned.