Can you cold crash too long?

[stuknkrvl]

Hey all,

I cold crashed a batch Friday morning with the intention of bottling this weekend, but one thing led to another and now it's likely I won't be bottling until this Wednesday.

Is that going to cause any issues? Could being that cold (37*F) that long stress the yeast and cause off flavors?

Thanks!

 

[TexasDroughtBrewery]

No you are fine. Think about lagers (cold storage) they leave beers at those temps for months.

 

[btbnl]

The only danger is oxidation if air is being sucked back in during the cold crash. In particular the higher solubility of CO2 in beer at lower temperatures causes suck-back well beyond just the shrinkage of the gas in the headspace. However it takes days to equilibrate, so with a short cold crash you don't get the full effect but with a longer one you do.