Cascade Blueberry

I received a bottle of Cascade Brewing Blueberry in a beer trade with the Beer Club 4 Men. The beer pours a purple color with a white head that also has some purple hints. The aroma consists of blueberry, vinegar, and sugar. The taste is tart and puckering on the front end with plenty of vinegar flavor. Blueberries balance the sourness with a light sweetness and hints of crust and sugar. The finish is dry and champagne-like. The alcohol content is 7.33% ABV. This was a rather delicious sour beer with great vinegar aspects blended with blueberry and crust-like flavors.