The beer itself is based on their normal (and excellent) barleywine recipe, with a couple of twists. First, the gravity has been enhanced to a generous 1.114 OG. Second, and intriguing, the beer spent a year aging on staves from a bourbon whiskey cask. Bourbon whiskey, by law, requires aging in virgin American oak barrels. Meaning, whenever a given cask of Bourbon has completed its aging process (a minimum of four years, but occasionally as high as 12 or more years), the barrel needs to be discarded by the distiller. Many make their way to Scotland and are used in the production of my second love, Scotch Whisky. However, many are also discarded. Randy Gremp found his way into a pickup truck full of such casks broken down into staves.
While they make excellent kindling, Randy decided that they should also find their way into the production of beer. To experiment, he brewed a special batch of his barleywine. He cut some of the bourbon staves into smaller pieces, shaved off the exterior portion of the stave (the part which constituted the outside of the cask), and dropped a bunch of these stave "chips" into a five gallon corny keg. Enough of the special barleywine was transferred into the keg to fill it up. Following a year of resting on these chips, the beer was transferred into another keg, where it aged for an additional year.
During our beer tour of Northern California this past August, I had the occasion to meet Randy Gremp at a party thrown by Charlie Gow. We had mentioned that we were touring microbreweries and brewpubs, and he mentioned that we should visit Calistoga on our way out. While Calistoga admittedly was not on our agenda, we made a minor adjustment. We had a fine lunch at the brewery, and tried the full range of beers. Save for one beer, the full range was very good to excellent. (That one beer, named "Golden Lager", is certainly not a lager -- a fact which Randy readily admits to. The owners of the brewery apparently insist on naming it a "lager" for marketing purposes. Why, I don't know; Randy mentioned that they have enough trouble brewing for their existing demand. But, I digress.) As we were sampling the product line, Randy invited us to try a couple of special beers. The first was their standard barleywine which is actually on tap (but not advertised -- you have to ask for it) and an excellent (****) representation of the style. The second special treat was this bourbon-aged barleywine.
The beer itself was a deep amber in my brandy snifter. A slight tan head had formed and slowly dissipated.
This beer is also presents a challenge to my rating methodology. While I generally judge a beer against accepted stylistic parameters, there are not many bourbon-aged barleywines available. So, the below rating is more a subjective response than an objective judgment. I hope that Randy decides to make this beer commercially available, although if he does it wouldn't be pouring for a couple of years. Until then, visitors to the Napa Valley Brewing Company are limited to their already excellent standard barleywine in addition to their very good line of ales.
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