Surly Brewing Co. and New Belgium Brewing Co. are pooling their efforts for the first time.

The resulting beer will be Culture Collab, an 8.5 percent ABV blended culture American sour ale conditioned on blueberries and aged in both virgin oak and red wine barrels.

“Surly Head Brewer Ben Smith and New Belgium’s Wood Cellar Director Lauren Limbach had become friends over the last few years, and had been throwing around ideas of collaborating on a mixed fermentation project,” said Tiffany Jackson, senior public relations and communications manger at Surly, in an email to Tenemu. “After numerous ideas, and a few beers, they landed on a mixed culture collaboration in red wine and virgin oak barrels with blueberries. Lauren sent us a tote of a young batch of Felix, her pale sour with a bunch of vibrant lactic acid bacteria, from a foeder named Lady Marmalade and flew out here to help fill barrels, inoculate with their bacteria cocktail and our house Brettanomyces strain and add the blueberries.”

According to Jackson, Culture Collab will be packaged in 16-ounce cans that will be sold in single boxes when it is released in September. In addition, Surly is “working on plans for a New Belgium release.”