This American “Gueuze” represents a spectrum of flavors from a traditional barrel aged sour ale, complete with aromas of aged cheese and a distinct earthy mustiness that can only be found in a well cellared barrel aged sour. The complexity and balanced flavors of Sour Opal can be attributed first to the crisp assertive tannic acidity of the Viognier barrels. Oak-derived flavors and aromas mingle with guava, passion fruit, pineapple and tart cherry notes. This beer rounds out with a crisp clean and quenching acidity as well as a mild grape fruitiness that is intensified by a higher carbonation level. 6.8% ABV.