Nordic berry sour with raspberry, blueberry, blackberry & lime Another day, another collab. This time we teamed up with Stillwater Artisanal and decided to make a Norwegian inspired sour. A tart berry explosion rounded off with the sour tang of refreshing lime. We jam packed this beer with all the local berries we could lay our hands on: raspberries, blueberries and blackberries to be exact. Pucker up!