The Lusty Owauku exploded.
Twice.
Y’see, one of the things I’ve now learned about brewing high gravity beers is that the primary fermentation is…vigorous. As the beer ferments, it gains a sludgy, foamy head, called krausen. The more intense the fermentation, the larger this krausen is. Up until the Lusty Owauku, the 1.5 gallons of headspace in my fermentation bukkit has been more than enough for this krausen to fully form, then fall back as fermentation slows.
Not so in this case. On the second day of fermentation, there was sludge in my fermentation lock. It was actually being pushed up by nothing more that the sheer power of the yeast fermenting.
I was clueless, and the lock was still bubbling, so I shrugged it off and went to bed. Some hours later, BANG! The whole house shook.
I will repeat that. The whole house shook.
My wife and I investigate. The lid has been blown sky-high, and there was protobeer and sludge all over the dining room. We groggily cleaned up, I reseated everything, and we went back to bed. Surely, the worst was over?
Of course not.
Two hours later. BANG! This time, there was protobeer on the goddamn ceiling. Oh, how I suffer for my craft. Additionally, the fermentation lock has cracked.
That’s right: there was so much pressure that the fermentation lock has a massive crack running along its length. I was impressed. Horribly annoyed, but impressed.
Clearly, things were not working as it was. So, I grabbed some tubing, another, small bukkit, and created a blowoff system. Essentially, I replaced the fermentation lock with this plastic tube, which led into the bukkit. As the fermentation went nuts, it would push the sludge out through the tube and into the bukkit. Some water in the bukkit ensured that no rogue bacteria or yeast would find their way up the tube.
So, for two additional days, the Lusty Owauku fermented so hard that it pushed sludge out the blowoff tube and into the bukkit. I’d say about a quart of detritus was expelled. Once it died down, I replaced the tube with an extra fermentation lock, and the beer proceeded to ferment away for the next week and change.
Today I put the Lusty Owauku into secondary. It was straightforward; sanitizing my glass carboy, siphon, tubing, and ladle. Why ladle? So that I could measure the gravity of the beer, to see how well it fermented. According to my recipe calculator, my starting gravity was about 1.112, or, ya know, three times higher than an average beer’s starting gravity. The final gravity for this beer should be between 1.029 and 1.035. The actual gravity of the beer as of today? 1.035.
Excuse me while I do a happy dance.
I expect that the gravity will very slowly drop over the next three months, and, at bottling, will end up squarely in the range we want. The first phase is complete, and aside from the explosions, it went well(as an aside, I’ve always wanted to be able to legitimately say something like that).
Oh, and it already tastes amazing. This beer is going to be a frigging beast in three months.
