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Chemical off taste

Discussion in 'General Brewing Techniques' started by Tim Smith, 8/1/19.

 

  1. Tim Smith

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    Posted 8/1/19
    Hi everyone, I new to the forum.

    I have two brews in kegs (one tastes worse than the other) with notable chemical flavour.
    I had this in another brew and thought that it was just the flavour of that hop that I did not like.

    Now to have it again I'm scratching my head as to what it could be.
    Very first brew was a can pilsner with saaz hops. These two brews are all grain.

    Ok so I keg, temp control ferment and these are all ales. I secondary rack into clearing tube and cold crash for 2 days. I do force carb my kegs.

    Clean with sodium percarbonate, sanitise with starsan. I hate cleaning so when something is finished with it is rinsed, cleaned and sanitised straight away. Make life easy.

    Do you think that the starsan could be soaking into fermenters, plastic ones and contaminating the brew?

    Or the only other thing I can think of is, Yeast off flavour, I know one brew (the worst flavoured one) had the potential to be maybe 4-5 points high on finishing. These beers are cloudy even after cold crashing.

    Hopefully you got have got this covered for me, being AG I hate to think all that hard work is to be thrown away.

    Thanks
    Tim
     
  2. Tim Smith

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    Posted 10/1/19 at 8:42 AM
    Mmmm, was hoping for some help.
     
  3. Lachie

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    Posted 10/1/19 at 11:01 AM
    Tim
    What are ya brew details,
    What brew process?
    Mash temp?
    How are you chilling?
    What batch size and how much yeast are you pitching?
    What ferment temp and what temp are you pitching at?

    The starsan won’t give a chemical taste unless huge amount of it.

    Could be an infection or off flavor from your ferment.

    Cheers Lachie
     
  4. altone

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    Posted 10/1/19 at 11:21 AM
    ABG likes this.
  5. Ross

    CraftBrewer AHB Sponsor

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    Posted 11/1/19 at 8:34 AM
    Tim, impossible really for anyone to advise from an online description, other than pure speculation. If you have a decent local homebrew store or are a member of a brewclub, take a sample for them to try & advise. We'll happily help you down at CraftBrewer, or if the hours don't suit, pop into our brewery & I'll happily taste & advise (Bacchus Brewing Co). Both at 2 Christine Place, Capalaba
     
    scomet likes this.
  6. Lachie

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    Posted 11/1/19 at 9:01 AM
    I disagree slightly Ross as they could be something standing out wrong in the process. I do agree though if you can get someone to taste that would be better, preferably with their BJCP accreditation too.

    Regards Lachie
     
  7. Ross

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    Posted 11/1/19 at 9:44 AM
    In 3 brews & one was just a simple can. It sounds to me like a wild yeast infection, but it is really just speculation, as peoples descriptions of the same off flavour can & do vary considerably. Even something that looks glaringly wrong in the process, is still going to be speculation without tasting.
     
    sp0rk and scomet like this.
  8. ElGuapisimo

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    Posted 11/1/19 at 10:41 PM
    Tim,

    Make sure no surgical rubber tubing has sneaked into your setup.

    It gives beer a taste like lifebouy soap.


    Charlie
     
  9. Lionman

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    Posted 14/1/19 at 5:34 AM
    95% sure it is your water.

    What water are you using?

    If using tap water you need to filter it with an activated charcoal filter and add ascorbic acid or sodium metabisulphite for good measure. This will remove the chlorine from the water which will stop the production of chlorophenols during fermentation which taste nasty and have a very low flavour threshold.
     
  10. wide eyed and legless

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    Posted 14/1/19 at 5:56 AM
    What does Lifebouy soap taste like? I have seen it for sale in our local Sri Lankan supermarket.
     
  11. enikoy

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    Posted 14/1/19 at 1:55 PM
    Tastes like surgical rubber soaked in beer.
     

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