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-   -   Erupting Bottles After Opening (http://www.homebrewtalk.com/f35/erupting-bottles-after-opening-313027/)

CEversole 03-14-2012 04:20 PM

Erupting Bottles After Opening
I have never had this happen before.

I recently bottled my IPA, and about 50% of the bottles, when opened, spew like a coke that has been shaken up. I only filled the bottles to the base of the neck and primed with corn sugar. I'm not shaking them, and none exploded on their own, its just when they are opened in order to drink.

Any thoughts, comments, similar experiences, etc?

Kaleco 03-14-2012 04:27 PM

What was your final gravity and what was your expected final gravity? How much sugar did you use? Are there any indications of infection?

Maybe you bottled too soon or with too much sugar.

TyTanium 03-14-2012 04:32 PM

A few causes (same as Kaleco listed):
  • Was not done fermenting (and finished in bottle)
  • Infection
  • Too much priming sugar

Did you bulk prime (~1/2c to whole batch) or add the sugar to each individual bottle?

CEversole 03-14-2012 05:49 PM

I did bulk prime it, there were no evident signs of infection (e.g., bad taste, etc), and some had been in bottles for a while before I opened them. Also, about 50-75% were fine and did not spew at all.

Shooter 03-14-2012 06:01 PM

All good points, also, how long have they been carbonating? If only for a short period, the CO2 may not be distributed through the beer properly.

LowNotes 03-14-2012 06:11 PM

How were the bottles stored during conditioning? I am trying to think of what could cause some but not all of them to foam so badly, and since you bulk primed there aren't many variables left.

I'm specifically wondering if a heating vent was blowing across some of the bottles or something, not a bunch but enough to cause fermentation to proceed a little further or a little more aggressively compared to bottles that were at a slightly cooler/more stable temp? Or instead of a heat vent, maybe a nearby window that lets in sun for part of the day?

LowNotes 03-14-2012 06:13 PM

Oh! Were all the bottles cold when you opened them? This may be basic and obvious, but cold liquids are capable of dissolving mroe gas than warm liquids, so if one beer was at 40* and you open, enough gas would be dissolved it wouldn't foam, but the same beer only chilled to 60* might release much more CO2 upon depressurization.

CEversole 03-14-2012 11:34 PM

Yes all the bottle were cold, however, even ones that did not spew were chilled at the same temperature. The bottles stayed covered with a towel no where near a window or vent, so the sunlight could not have done it. This is why I thought this was a post worthy question, because it does not make sense to me either. I'm at a loss, baffled. I do not want this to happen again, hopefully a fellow brewer has a solution.

RensBerserker 03-15-2012 01:59 AM

I've had similar experiences with bottling when I didn't adequately mix in my priming sugar solution. Some bottles got more sugar (and fruit flavor concentrate, for that particular wheat beer), and gushed. Others didn't. Were you diligent about stirring the beer gently to mix in the sugar?

I've also had a batch that had sporadic, per-bottle infection from improper cleaning or sanitation of a few of the bottles I was using. That'll teach me to bottle in a rush!

carter840 03-15-2012 01:43 PM

I've had this happen even on commercial beers that were just sitting in my fridge for a few days. It seems random sometimes, but of course their must be a reason behind it somewhere.

Now that I think about it maybe my friends shake my beer bottles behind my back...

They can't be trusted anymore. I need new friends.

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