Cider turned vinegary in the bottle

[rosco065]

Hi there I brewed a cider as normal primed with sugar drops and let it sit in the shed for a month. I tried a bottle and it was good maybe needed a little more time to mellow. I tried another bottle a couple of weeks later and it had turned vinegary. Any ideas what has happened?

 

[HopSong]

I'd suggest that if one was good and another not.. it might well be that bottle was not cleaned and sanitized well.

 

[gregbathurst]

I had this happen once, it means the bottle wasn't sealed well enough.

 

[golfish67]

Did you sanitize with bleach? If so I would guess you didn't rinse good enough. A very small amount of bleach residue will do that. If both bottles were crime the same batch then that bottle wasn't rinsed enough.

 

[rosco065]

The cider was still fizzy. I didn't rinse the bottles after sanitizing because I used the baby bottle sanitizer but I did first off clean the bottles with sodium hypochlorite maybe there was some of that left

 

[rosco065]

Could temperature also be a factor?

 

[WVMJ]

Open another bottle, if its vinegar the whole batch may be contaminated. Most of the other posts are off because the cleaners do not add a vinegar taste, they add chemically taste, bacteria add a vinegar taste. Did you ever add any sulfites at the start or at bottling? You might be lucky and only a few bottles are not sealed well, or unlucky in that the whole batch was contaminated. Did you keep the headspace to a minimum during fermentation? Hope it was just the one bottle. WVMJ

 

[rosco065]

I just used a Camden tablet at the start left little room in the fermenter. I only produced 5 liters so not really an issue for waste. It was my first attempt so not too much of an issue. Will get more apples the next season and try again.