Do finings kill yeast?

Do finings kill yeast?

No, if they did, we wouldn't use them....

So what's going on that you're trying to figure out what happened?What makes you think your yeast is dead?

Have just found my brew sitting cold during fermentation but didn't notice till we had added finnings so wanted to know if we can bring it back or do I cut my losses and dump it

Just warm your fermenter up and it will be fine. And shame on you for even considering dumping your beer.....Your beer is hardier than you think....

mykool said:

Have just found my brew sitting cold during fermentation but didn't notice till we had added finnings so wanted to know if we can bring it back or do I cut my losses and dump it

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Wait...what? When exactly did you add finings? Before fermentation was complete? Typically finings are added during boil (e.g. Irish moss or whirfloc) or after fermentation (e.g. gelatin). If you add before fermentation is complete you will floc the yeast and they can't finish.

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LOL

HomebrewMTB said:

Wait...what? When exactly did you add finings? Before fermentation was complete? Typically finings are added during boil (e.g. Irish moss or whirfloc) or after fermentation (e.g. gelatin). If you add before fermentation is complete you will floc the yeast and they can't finish.

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WRONG!!!!!!!!

Finnings work on the proteins in the beer. It has a negative charge, which binds the proteins which are positively charged. Although some yeast might have gotten trapped as the proteins fell out it wouldn't be enough to keep the beer from fermenting, or carbing, or whatever. It will have no direct affect on the yeast.

Even adding finings at some other point would not cause the yeast to flocculate. A change in TEMPERATURE would cause the yeast to fall out, but warming the beer back up and giving it a light swirl will get them going again.

And even if it DID cause the yeast to flocculate, they would just wake up again if you changed the conditions of the fermenter, swirling, warming or adding some more sugars.

Flocculation is not death, and as long as the yeast is alive, it can get back to finishing the job.