Apple smell

Discussion in 'Homebrewing' started by ManOfMayhem1214, Jul 22, 2015.

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  1. ManOfMayhem1214

    ManOfMayhem1214 Initiate (0) Jun 20, 2015 New York

    Hey guys so I'm almost on three weeks of carbonation...as some of you know from my other thread. I cracked a bottle today to do a taste test. This bottle was actually a bottom of the keg bottle too. When i opened the bottle it had an apple-ish smell to it when i poured the beer. There are definitely bubbles in the beer so i know its carbonating successfully. Is the apple smell normal?
     
  2. ManOfMayhem1214

    ManOfMayhem1214 Initiate (0) Jun 20, 2015 New York

    PS when I poured the beer I had a little head on it but not a huge head...should I keep letting it sit?
     
  3. scottakelly

    scottakelly Maven (1,487) May 9, 2007 Ohio

    If carbonation seems adequate throw the rest in a fridge and be patient for another two weeks then retry.
     
  4. VikeMan

    VikeMan Grand Pooh-Bah (3,067) Jul 12, 2009 Pennsylvania
    Pooh-Bah

    It's most likely acetaldehyde. The yeast in your bottles should eventually reduce it. I'd leave the bottles at about room temp to facilitate that.
     
    machalel likes this.
  5. jbakajust1

    jbakajust1 Pooh-Bah (2,552) Aug 25, 2009 Oregon
    Pooh-Bah

    Don't throw them in the fridge. The green apple smell is most likely acetaldehyde which the yeast in the bottles will clean up after they fully carbonate the beer. Move it all to a warmer location to help facilitate the carbonation and clean up. Then put into the fridge.
     
    machalel likes this.
  6. dmtaylor

    dmtaylor Savant (1,149) Dec 30, 2003 Wisconsin

    Why are you guys jumping to acetaldehyde? If it smells like artificial green apple, then that's right. Acetaldehyde boils at 70 F, so the right thing to do is to warm it up.

    But on the other hand, it might not be acetaldehyde at all, which is the reason for my question. Many yeast strains produce sweet (not sour) apple-like and pear-like esters. What yeast did you use? Esters will be reduced with age and cool conditioning, but it can take a very long time, e.g., like a year or more.

    In either case, the beer might just be young yet. Give the yeast time to clean up after itself, and it might all go away.
     
  7. VikeMan

    VikeMan Grand Pooh-Bah (3,067) Jul 12, 2009 Pennsylvania
    Pooh-Bah

    I don't think anyone who suggested acetaldehyde also suggested cold conditioning. But "boiling" it away isn't the answer. It's already bottled, so there's nowhere for it to go. If it is acetaldehyde, yeast activity is the only cure I'm aware of.

    Fair point. I mentally read apple as "green apple."

    OP: does it smell like green apple or like a ripe apple?
     
  8. jbakajust1

    jbakajust1 Pooh-Bah (2,552) Aug 25, 2009 Oregon
    Pooh-Bah

    Reading the first post he references above and seeing his time on BA I'm making the assumption that he is new to brewing. Apples + new to brewing + rushing to sample the beer + American Light Beer = acetaldehyde assumption. Which, if it is an American Light Lager kit then acetaldehyde is actually to style.
     
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  9. dmtaylor

    dmtaylor Savant (1,149) Dec 30, 2003 Wisconsin

    Yeah... hence why I edited my post within 5 minutes to reword. Yeast activity would indeed be the only cure if it's already bottled. For some reason I had "keg" on the brain.
     
  10. ManOfMayhem1214

    ManOfMayhem1214 Initiate (0) Jun 20, 2015 New York

    You guys are correct it is my first batch. I'll put the box in a warmer temperature and let the yeast do its thing. Thanks for the help guys! I am very anxious to taste it but I do want it to be correct!
     
  11. ManOfMayhem1214

    ManOfMayhem1214 Initiate (0) Jun 20, 2015 New York

    I would also say that its more of a green apple smell
     
  12. VikeMan

    VikeMan Grand Pooh-Bah (3,067) Jul 12, 2009 Pennsylvania
    Pooh-Bah

    That points to acetaldehyde. Some warm time should fix it. Good luck.
     
    jbakajust1 likes this.
  13. HerbMeowing

    HerbMeowing Maven (1,295) Nov 10, 2010 Virginia
    Trader

    Time heals all homebrew.
    Except for those brews it don't.
    Better brews ahead.

    -HoMeBRew HiaKu
     
    MrOH likes this.
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