Fermentation stopped a bit early

Discussion in 'Homebrewing' started by corbmoster, Aug 28, 2015.

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  1. corbmoster

    corbmoster Pundit (848) Dec 15, 2014 Texas
    Trader

    Making an extract stout: (OG = 1.056) Brewed 8-16 @ 66.5 increasing to 68 as days went on. Checked gravity 8-25 and it was 1.019 when expected FG should be 1.015 I increased the temp to 71.6, and it really hasn't gone down much - 1.018 as of 8-27 It's not far off from the expected FG of 1.015, should I just be happy with what I have? Or should I try to re-start fermentation some how. As a side note: fermentation was not very vigorous with this. Wasn't sluggish, it took off within a day. But the amount of krausen wasn't as much as I was used to seeing in the carboy. Almost none went through the blow off tube. It tastes ok. Dark, roasty, not really sweet. I could certainly live with it if the chances of doing more harm than good were likely. It does need to go to a secondary with vanilla bean and oak chips so if that is an opportunity, let me know.


    6# dark LME
    1# dark DME
    Black patent 0.75 lbs
    Roasted barley 0.25 lbs
    1oz cluster
    1oz Est Kent Golding
    Irish moss
    wyeast nutrient
    WLP004 (with 1.75 L starter)
    Aerated by degassing rod & drill
     
  2. inchrisin

    inchrisin Pooh-Bah (2,013) Sep 25, 2008 Indiana
    Pooh-Bah

    If you really want the extra 3 points you could add something like US 05 to finish it off. I'd rather reuse the yeast though. Krausen doesn't mean much. It's a sign of active fermentation, but I wouldn't be measuring trub. I'd stick with what you've got. Most Irish beers don't taste great to me until they are a few months old. Warm unbubbly readings will only mislead you. :slight_smile:

    Oaking this beer will probably thin the body out. Another reason to keep whatcha got.

    P.S. You don't want krausen going through your blow off tube, if you can help it. That's the best yeast of the bunch and you want to keep it on top of your beer. Proper head space, antifoam, and coolish fermenting temps can help prevent blowing off yeast, FWIW.

    Same problem here:

    http://forum.northernbrewer.com/viewtopic.php?f=26&t=119610
     
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  3. toronto_brewer

    toronto_brewer Initiate (0) Jun 11, 2015 Canada (ON)

    I agree with inchrisin about "keeping whatcha got"

    I would say there is more risk than reward at this stage and chances are you will likely be pretty happy with the end product despite the numbers.

    Was your yeast a little older when you started? just curious.
     
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  4. corbmoster

    corbmoster Pundit (848) Dec 15, 2014 Texas
    Trader

    White labs did not have a mfg date, but an exp date. Exp was in October. So maybe a little old, but after reading the post inchrisin linked above it sounds like my fermentation was quite normal.
     
  5. toronto_brewer

    toronto_brewer Initiate (0) Jun 11, 2015 Canada (ON)

    Ok, good to hear!

    I clearly didn't check out the link. My bad.
     
  6. GreenKrusty101

    GreenKrusty101 Initiate (0) Dec 4, 2008 Nevada

    Live with it...FGs quoted are often unattainable (especially with that maltbill)

    edit: fwiw...nix the Black Patent and see how much better it is next time
     
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  7. VikeMan

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

    1.015 sounded really low for this recipe. So I popped it into BrewCipher, and it predicts 1.020. I'm guessing it's done.
     
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  8. inchrisin

    inchrisin Pooh-Bah (2,013) Sep 25, 2008 Indiana
    Pooh-Bah

    BP goes in all of my stouts, which for some reason come out amazing. :grinning:

    I'll take you up on a stout recipe that you think is good with just RB and chocolate.
     
  9. JackHorzempa

    JackHorzempa Grand Pooh-Bah (3,375) Dec 15, 2005 Pennsylvania
    Society Pooh-Bah

    How much Black Patent malt do you use?

    Cheers!
     
  10. GreenKrusty101

    GreenKrusty101 Initiate (0) Dec 4, 2008 Nevada

    Was shooting from the hip a little...when I said "Stout" I meant Dry Stout...Sweet Stouts might require a little BP, IMHO

    For the record my dry stouts aren't just chocolate and RB : )
     
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  11. inchrisin

    inchrisin Pooh-Bah (2,013) Sep 25, 2008 Indiana
    Pooh-Bah

    More often than not it's 1/2# and usually accompanied by 1/2# RB. I'll go up to 3/4# in bigger beers. The RB would be equal or up to a pound here though.

    I tried a dry stout similar to JZ's dry stout with a full pound of BP. It tasted kind of like licking an ash tray. It has its limitations, but it can go in any of my stouts or porters.

    Strangely enough I read another article today on stouts v. porters. and they're still the same damn beer. :slight_smile: Edit: Have I been doing stouts wrong for 4 years?
     
    #11 inchrisin, Aug 28, 2015
    Last edited: Aug 28, 2015
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  12. GreenKrusty101

    GreenKrusty101 Initiate (0) Dec 4, 2008 Nevada

    Was perusing JZ and JP's BREWING CLASSIC STYLES and the only stout that had black patent in it was their sweet stout...dry, oatmeal, American, Foreign Extra, and Russian Imperial were all sans BP.
     
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  13. inchrisin

    inchrisin Pooh-Bah (2,013) Sep 25, 2008 Indiana
    Pooh-Bah

    It's always around the house and seems to slip into a lot of my dark beers. I never really thought that much about it. It's kind of like how carapils goes into just about everything.

    On a more interesting note, why would the ash grain go into a sweet stout? Yin to yang?
     
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  14. GreenKrusty101

    GreenKrusty101 Initiate (0) Dec 4, 2008 Nevada

    Yes ...won't seem so acrid (I guess)...cheers
     
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  15. corbmoster

    corbmoster Pundit (848) Dec 15, 2014 Texas
    Trader

    Thank you sir, I do need to sit down and play around with Brew cipher a bit.
     
  16. JackHorzempa

    JackHorzempa Grand Pooh-Bah (3,375) Dec 15, 2005 Pennsylvania
    Society Pooh-Bah

    I use Black Patent when I brew my Oatmeal Stouts; 1/4 lb. I never use more than 1/4 lb. in any beer that I brew; that is my limit.

    Cheers!
     
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  17. inchrisin

    inchrisin Pooh-Bah (2,013) Sep 25, 2008 Indiana
    Pooh-Bah

    I'm hardcore like that. Also see, " Ferm Cap is for *******" Et al. my response.
     
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  18. MostlyNorwegian

    MostlyNorwegian Pooh-Bah (2,236) Feb 5, 2013 Illinois
    Pooh-Bah

    Your gravity is well within the pocket for the style. I wouldn't stress over such a small difference at this point.
    Use now as the what if I did this this way and ask those questions for next time you brew.
    What was your mash temp? and also, damn that's a lot of black patent malt. Study some other recipes because a little goes a very long way.

    I wouldn't expect a beer coming in at 1056 to go screaming during peak. I'd expect a steady race and be surprised if I had to use a blow off tube.

    I'd skip the oak and possibly maybe the vanilla as well. Just looking at the grain bill, you might want to study this beer for what it is before riffing and making it something else.
     
  19. VikeMan

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

    OP didn't do a mash with those ingredients.
     
  20. MostlyNorwegian

    MostlyNorwegian Pooh-Bah (2,236) Feb 5, 2013 Illinois
    Pooh-Bah

    Oh, right. You extract brewers chilling there on easy street.
     
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