Within a few months of opening our doors in March 2016 we started putting beer in oak barrels at The Virginia Beer Company. There's nothing particularly ground-breaking about barrel-aging high gravity beers. Pretty much every brewery is doing it, and for good reason - the results can be delicious.
In July 2016 we started our Barrel Fermentation Program. While most barrel-aged beers are fermented in stainless steel tanks, and then fully fermented beer is racked into oak to age, this project is a little different. Taking inspiration from old world brewing techniques, our Barrel Fermentation Program fills used wine barrels with freshly cooled wort direct from the brewhouse, completely bypassing the stainless cellar tanks. Once in the barrels the wort for Batch I was inoculated with a variety of yeasts including multiple strains of Brettanomyces, a "wild" Saccharomyces strain, and Saison yeast.
Spontaneous fermentation, this is not, and does not pretend to be. Known cultures were pitched with intention and flavor profiles in mind. That said, there is a definite lack of control involved in this project and that makes it that much more exciting. So much of my day as a brewer is about controlling fermentation - yeast cell counts, fermentation temperature profiles, sanitation, gravity readings, QA/QC lab sampling/incubation, etc. Our Barrel Fermentation Program gets rid of most of that regimentation, instead leaving the blend of yeasts to do their own individual thing as they will over time.
On the day we pulled Barrel Fermentation I from the Hungarian Oak red wine barrels for packaging, we were simultaneously brewing another batch, Barrel Fermentation II. As soon as the barrels were empty they were refilled with fresh wort for Barrel Fermentation III. Refilling the same barrels allows the now resident yeast culture in the barrels to take over with no additional yeast being added. We'll see what happens with this one and let the beer and the barrels tell us when it is ready!
This first release is one of my favorite beers that I've ever had a hand in producing, and I hope everyone enjoyed it as much as I do. I think it had just the right amount of Brettanomyces fruity funk to complement (but not overpower) the Nelson Sauvin hops and oak character.
Barrel Fermentation II (also brewed in July 2016) has been tasting quite nice out of the barrels. It has since been kegged and bottled, with an infusion of Brett Brux directly into the bottles to add a component of bottle-conditioning to this project. The bottle-conditioning will produce even more of the trademark esters and phenols that often mark a "Brett beer" as funky with hints of tartness.
Entirely approriate to enjoy now or to cellar for a future occasion, look for the bottle release of Barrel Fermentation II - this one a blend of Williamsburg Winery French & American oak red wine barrels - starting on July 1st, 2017. No promises on when Batch III will be ready - time and wild yeast will tell.
Cheers to lack of control and more barrel fermentations!