haze in beer when cooled

[EoinMag]

It's called chill haze, apparently to do with a lack of a cold break in your brewing process.

Palmer has some information on it here:

http://www.howtobrew.com/section1/chapter7-4.html

[mysterio]

It's called 'chill haze', try a search for more detail, it's a common complaint.

It's a perfectly natural side effect of brewing, big breweries avoid it by filtering the hell out of the beer.

All-grain brewers have a few tricks to avoid it, but even then it still exists.

Two ways you can get rid of it at home: drink your beer at 10 or 11 C (you'll be able to taste it at this temperature too). Or, you can leave it in the fridge for a few weeks, the proteins & polyphenols will form a complex and precipitate out of the beer and form an unstable sediment at the bottom of the bottle. If you pour carefully you will get crystal clear beer - about two or three weeks at fridge temps will do it.

Edit: Eoin beat me to it

[EoinMag]

If this it happening to you with kits then change the kit or feed back to the manufacturer that they have problems with their worts.
Another solution is that you start boiling your wort and sort yourself out with an immersion chiller, but then you may as well go ahead and move on to extract brewing straight away.

[pauljmuk]

Interestingly, I'm 95% an extract brewer, and make up my worts in a large stockpot for the boil. Have never chilled the wort, always just poured into the FV and topped up with cold water to the required brew length. I have never had a hazy or cloudy beer ever.

That said, I've just brewed a Wherry kit, as per the instructions (because Muntons finally sent me a replacement for one that failed ages ago), and whilst it brewed ok this time, it's been conditioning in bottles for 6 weeks and is still cloudy and hazy as hell.

[Jim]

Generally speaking, brewers of british ales won't have this problem if they serve their beers at the right temperature (10 -13C).

However, as said above, cold conditioning your beer in the fridge can help to remove it. If you have a fermentation fridge you can cold condition in that before you bottle or keg it.

[WishboneBrewery]

I've just noticed this when i chilled down a bottle of my AG#2, an IPA... it looks lovely and clear at regular cellar temperatures though