Sour beers are usually made in barrels that were previously used for wine, and the Mad Fermentationist and his friends bought some French oak barrels from a local vineyard for their sour beers. (FYI, I think they paid $125 per barrel from a vineyard in Northern VA.) This is a possibility we could explore too, and if we want to do a sour beer maybe we should just go to some local wineries and see what is available. IMO, a wine barrel would really be better for a sour ale. With the bourbon barrels we might be looking at a different sort of brew. I know for a fact that when Blue Mountain got the barrels, they were fresh from the distillery and still had a fair amount of bourbon in them. They just put their beer right in there with the remaining bourbon. These are also American oak barrels, so we'd presumably get more "oak-iness" out of them too depending on how much oak flavor was extracted by the bourbon and Blue Mountain's beer. I would guess that for the initial experiment, we would probably want to brew something that would be complimented by a small amount of bourbon flavor and oak addition, maybe stout, porter, or even Belgian tripel or something. I'll try not to dump packets of Roeselare when no one is looking.

If you read through the Fermentationist's blog, they added some Roeselare and funked beers to get things started with their sour. Without that initial inoculation of bugs, beers might not sour real quickly. With a bourbon barrel, we'd probably get minimal funk, at least in the first months. But once we figure out how it's aging, we could definitely make it evolve towards something sour and funky. I could be totally wrong on this of course because Blue Mountain put a beer in the barrels already, so there might be a good chance that acetobacter has taken up residence in the wood. Buy the barrel and figure out the brew later? At any rate, I'm game for either a bourbon-aged whatever or a sour experiment.