Spontaneous Satellite Fermentation

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JuanKenobi

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I left my OG sample on the counter last night and today it looks like this:



It looks like a normal fermentation to me. The sample was definitely taken before I pitched. Could there have been yeast hiding in my thief or test cylinder from a previous sample? I doubt the thief as it was sanitized in a starsan bath before use. The only thing I didn't sanitize was the test cylinder. I did take a sample of another batch before I started brewing, but then I rinsed it thoroughly with hot water and used it to take pre-boil gravity and rinsed again before taking an OG reading. Could there have been enough cells hiding in the test cylinder after all that to start a visible fermentation in less than 24 hours? Am I blessed with wild Saccharomyces flying around my kitchen? Or is this some kind of infection?
 

Laughing_Gnome_Invisible

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After I brew, I leave my sample jar near where I mill my grain just for ****z'n giggles. It always takes off around the same time as my brew just from the wild yeast in the grain.
 
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JuanKenobi

JuanKenobi

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It's pretty amazing that it happens that fast. Now that you mention it, I was cleaning my grain mill right next to the sample.
 
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