Chick Fil A Spiked Lemonade?

[getrecked786]

Hi all,

So I recently got chick fil a lemonade maybe 3 days ago. I took it out of the cup and put it into a water bottle and forgot about it for some days. Today I opened it and it was fermenting! I'm not sure how this is possible as I didn't add any yeast, but it definitely smells right! It's also steadily fizzing and puffing up the container I'm purposely sqeezing before closing! I moved it into a different container and you can see it in the attached picture.
Could anyone explain how this is possible? Also, are there any tips you have for me that would help this finish successfully?

Please let me know! Thank you!

 

[rmr9]

I would probably toss it out, definitely wouldn’t drink it. Could be wild yeast, could be bacteria from your mouth or somewhere else, not something you want to drink a mini-incubator’s worth of.

 

[getrecked786]

I would probably toss it out, definitely wouldn’t drink it. Could be wild yeast, could be bacteria from your mouth or somewhere else, not something you want to drink a mini-incubator’s worth of.

Thanks, I really appreciate it! I was concerned about that too.