New Belgium Brewing Company: Felix Aged in Whiskey Barrels

Official description from the brewery:
Felix Aged in Apple Whiskey Barrels is a single-foeder golden sour ale aged in apple-flavored whiskey barrels from Leopold Bros. Distillery. It's part of our Wood Cellar Reserve series, a collection of rare, small-batch wild and sour ales expertly aged by the most award-winning sour brewery in America. From individual barrel expressions, fruit and spice experimentation and fermentation explorations, the Wood Cellar Reserve represents our most ambitious efforts in our two biggest passions – wood and beer. The beer inside contains the longest, continuous souring culture in America and will develop in the bottle for up to five years. Each batch is bottled-conditioned and 100% naturally carbonated, allowing for the perfect texture and carbonation that our blenders intended for this beer.