Is it infected? What's this white stuff

[myerstyson]

Buddy of mine did a DME extract kolsch kit and when he opened the fermenter to bottle, he saw this.

 

[ghohn]

"Is it infected? What's this white stuff"
^^^ That's what she said

But seriously, looks fine to me. Does it taste off?

 

[myerstyson]

He said it tasted fine, but was worried about that white stuff. I don't remember ever having that in any of my brews.

And yes, I should have thought of Michael Scott before typing that line.

 

[meatcleaver]

kinda looks like yeast rafts to me. s-05?

 

[myerstyson]

kinda looks like yeast rafts to me. s-05?

Yep. You got it. S-05

 

[snowveil]

Definitely looks infected to me...that's a broken pellicle. Lactobacillus is the most likely culprit but you can't always tell just by looking at it.

If it tastes fine he's ok to drink it, but be wary that bacteria will slowly ferment sugars that yeast was unable to ferment. This could result in exploding bottles if he lets them sit for a long time. Drink it relatively quickly (within 1-2 months or so) and he should be fine.

 

[Komodo]

Definitely looks infected to me...that's a broken pellicle. Lactobacillus is the most likely culprit but you can't always tell just by looking at it.

If it tastes fine he's ok to drink it, but be wary that bacteria will slowly ferment sugars that yeast was unable to ferment. This could result in exploding bottles if he lets them sit for a long time. Drink it relatively quickly (within 1-2 months or so) and he should be fine.

+1 look at the hop ring.

 

[Hello]

Looks exactly like my lacto infection.

 

[unionrdr]

That broken ice pack look is definitely the early stage of an infection. If it's at a stable FG, bottle it now, but keep the Vco2 down to about 2.3. That'll leave room for any extra carbonation produced by the infection...if it does at all.

 

[drainbamage]

+1 look at the hop ring.

I was going to say yeast rafts at first, but that ring around the top looks a little funky to me as well.