Bottle Bombs... Again!

[cernst151]

If you bottled 4 batches in one night, did you clean and sanitize bottling equipment between each batch? If you bottled a beer that had a more highly attenuative yeast strain first, you may have "infected" your subsequent batches with a different strain of brewers yeast.

Rupert, you just won the internet! Congratulations!

HA! I've been racking my brain on this for weeks, and plenty of other people have chimed in. I was a little worried about not sanitizing between batches but I figured it should be fine since none showed any sign of infection. It never even occured to me that I'd be "infecting" the last 2 batches with the yeast from the first 2. I suppose if I'd bottled in the other direction it wouldn't have been a problem.

The IPA and the Red both used Wyeast 1056 (attenuation: 73-77%) while the stout and second runnings used Wyeast 1187 (Attenuation: 68-72%). That left those 2 batches with a spare 5% sugar for the yeasties to eat.

Thank you Rupert. If you're ever near the Twin Cities, I owe you a beer.