Is this started contaminated?

[leohenry]

Hello everyone,

For the first time I top cropped yeast, and decided to make a started before putting the yeast in the fridge.

As I still don't have a stirplate, I was frequently swirling the erlenmeyer.

Fermentation was quick and great, but when I woke up (meaning didn't swirl it for lile 8h), i found it like in the picture (above view - taken from the top of the erlenmeyer)

Are those circular patterns a sign of contamination or might it be just yeast and I'm being paranoic?

Thanks in advance!

 

[day_trippr]

The pic isn't great for analysis but I'm inclined to go with yeast colonies...

Cheers!

 

[brewshki]

I am betting on yeast as well. kinda hard to see

 

[SoCal-Doug]

Hard to tell by the picture. Does it smell right? In some cases, infection has a "weird" smell but not always. I'll assume you practice good yeast hygiene... If you are confident on your sterility, and it smells good, i would say brew it.

 

[leohenry]

Thanks everyone for the quick replies! I guess the forum automatically resized the img.

Gonna cold crash it on the fridge for now... I'll let you all know how it went when I actually use it

Cheers!