2 infected brews!

[jonewer]

Oh dear. I have two kegs full of undrinkable beer

I cant really figure it out, its obviously different infections in each. One tastes of really old oxidised beer you'd get from a bad pub and the other one tastes of nail varnish remover.

Had about 6-7 brews and some kits, all fine, no infections at all. Now two in a row?

The only things I have changed is SO4 to US05 and new yeast nutrient. Anyone ever had trouble with nutrient causing infections? Does US05 take very long to become drinkable?

Not good this. I dont think I can keep this up if all my beer is fit only for the compst heap!

 

[bigsteve2007]

r you transferring to a secondy

 

[jamesb]

Could the nail varnish remover be more like TCP?

If not, what temperature were you fermenting for, how long did it take?

 

[jonewer]

No secondary ferment, only from fv to keg.

I have never had a problem with chlorine in the brewing water, but did wash out the keg with a lot bleach.... doesnt taste like TCP though. Its a really strong acetone flavour. Very chemically.

Fermentations were between 18 and 22C.........

 

[jamesb]

Let's assume it is an acetone taste then. That usually indicates Ethyl acetate. Can be caused by the yeast strain - but that's not the case in your situation. Same with a higher fermentation temperature causing it, your temperatures were ok. It could be a wild yeast infection.

The other one just sounds like it's been oxidised through contact with air.

 

[Halite]

best thing to do before you brew again is to methodically clean and sanitise all of your equipment. Take particular care and do a really thorough job. Also if you are fermenting in plastic check your fermenters and make sure there are no significant scrapes that could hide any nasties.

 

[highwayman]

You are not the only one to suffer this I have had two brews that tasted just like yours and I put it down to fermenting my beers during hot spells. I found the yeast raced like mad ! I ended up throwing them down the toilet and then I built a FV Cabinet..! !
With regards to Cleaning and Sanitizing I use Tubby Shaw'sHow to.. for all my brewing equipment..and it seems to work for me :thumb:
http://www.thehomebrewforum.co.uk/viewtopic.php?f=30&t=6536