Evil Twin Beer’s newest release was aged in very unique barrels.

The beer is Imperial Biscotti Break Raspberry Umami, an 11.5 percent ABV imperial stout brewed with almonds, coffee and vanilla before being aged in bourbon barrels that had previously aged fish sauce from BLiS Gourmet for “over a year.” According to Jeppe Jarnit-Bjergsø, owner of Evil Twin, the barrel-aged version was then blended at a ratio of 1:10 with Evil Twin’s regular Imperial Biscotti Break before being aged on “a shit ton” of raspberries for “about a month.”

“The BA version was so intense we had to tone it down that much,” wrote Jarnit-Bjergsø, in an email to Tenemu. “The BA only version was undrinkable.”

Imperial Biscotti Break Raspberry Umami uses Evil Twin’s Imperial Biscotti Break, an 11.5 percent ABV imperial stout brewed with almonds, coffee and vanilla that was first released in 2012, as its base, and was brewed and bottled at Westbrook Brewing Co. in Mount Pleasant, S.C. In addition, this is not the first time that Evil Twin has used BLiS Gourmet barrels, as both Michigan Maple Jesus (12 percent ABV) and Even More Jesus Bourbon Maple Syrup Barrel Aged (12 percent ABV) incorporate beer that was aged in various versions of the company’s barrels.

According to Jarnit-Bjergsø, there are only 5,112 22-ounce bottles and 40 sixtels of the Imperial Biscotti Break Raspberry Umami being released, but they will be distributed “nationwide.”