The latest version of Community Beer Co.’s Barrel-Aged Legion has been sitting in barrels longer than any other version so far.

When it is all said and done, the newest incarnation of the Dallas, Texas-based brewery’s barrel-aged Russian imperial stout will have aged in 35-year-old scotch barrels from The Macallan distillery for “just over 12 months.” The base beer is  Community’s Legion, a 10 percent ABV Russian imperial stout that incorporates 12 different malts, including English Maris Otter, dark crystal and highly roasted black malts.

“Being very old barrels (about 35 years old), they are fairly neutral, so they needed quite a while to develop barrel character,” said Jamie Fulton, brewmaster at Community, in an email to Tenemu.

This will mark the fourth time that Barrel-Aged Legion has been released in bottles after the imperial stout debuted in December 2014 after being aged in Heaven Hill Distillery barrels. The last incarnation was released in November 2015, and that version was aged in Woodford Reserve barrels for five months.

According to Fulton, this release of Barrel-Aged Legion will constitute approximately 300 cases and will be packaged in four-packs of 12-ounce bottles that are scheduled to begin shipping to retailers in “mid to late November” after the official launch at the brewery on Nov. 11, where the stout will be served exclusively on draft. In addition, unlike previous versions, the exterior packaging will be different to reflect the fact that this release was aged in scotch barrels.