As it has done since 2013, Prairie Artisan Ales will be celebrating its latest anniversary with a special beer.

This time, the Tulsa, Okla.-based brewery will be releasing 5th Anniversary, a 7 percent ABV sour ale conditioned on raspberries and aged in oak. In an email, Krebs Brewing Co. owner Zach Prichard told Tenemu that the ale is a blended beer, but that “the majority of the beer was in wood for a year” and that the ale was “in contact with the fruit for a significant portion of that year.”

This will be the fourth anniversary beer that Prairie has brewed: 2nd Anniversary (7 percent ABV) consisted of Prairie Ale aged in chardonnay wine barrels and was released in 2013; 3rd Anniversary Ale was an 8 percent ABV farmhouse ale brewed with raspberries that was released in Sept. 2015 and 4th Anniversary was a 7.5 percent ABV ale fermented with wild yeast and blueberries that was released in Sept. 2016. Prairie officially opened its doors in October 2012.

According to Prichard, 5th Anniversary will be packaged in 12-ounce bottles and is scheduled to be released exclusively at Krebs Brewing Co. in Krebs, Okla. in “late September or early October.” In addition, while the beer label attached to this story is the label that was approved by the Alcohol and Tobacco Tax and Trade Bureau (TTB), Prairie frequently changes the final designs of labels before the beers are released to market.