Not sure i pitched enough yeast

Discussion in 'Homebrewing' started by BigJoeC, Dec 11, 2013.

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  1. BigJoeC

    BigJoeC Zealot (563) Jan 22, 2011 New Jersey

    So for my Belgian Dubbel I'm not sure my starter was beer big enough. A couple days after brewing I didn't have much of a roaring fermentation. I'm wondering if it would help to pitch another vial.
     
  2. OddNotion

    OddNotion Pooh-Bah (1,915) Nov 1, 2009 New Jersey
    Pooh-Bah

    A lot more info is needed
     
  3. BigJoeC

    BigJoeC Zealot (563) Jan 22, 2011 New Jersey

    This is my post after brew day.

    "I just brewed the all-grain Dubbel recipe I got from the local shop. The recipe shows an OG target of 1.084-1.087 and FG of 1.018-1.020 with ABV of 8.75.

    My OG reading was 1.064 (after taking into account temperature) and Potential ABV of 8%.

    This is my second all-grain in my new ss pot. I started with about 7 gallons of wort, boiled off about 1 gallon. I ended up with 5.75 gallons in my fermenter with 1/2 gallon left in the kettle.

    Is it safe to say that if I lowered my starting volume by 1/2-3/4 gallons (starting with 6.5-6.25 gallons) I would have a higher concentration of fermentables? Would it really adjust the .20 that I am off?

    Any ideas would be greatly appreciated. It may be a bit off but like some of you say....it'll be beer!"

    My starter was a 2L 200g DME with 1 vial. It wasn't extremely active. I crashed and decanted.

    Think another vial is needed. It's been just over a week.
     
  4. FATC1TY

    FATC1TY Pooh-Bah (2,564) Feb 12, 2012 Georgia
    Pooh-Bah

    Hrmm.. Whats the gravity of the wort/beer now?

    I'd check that before you move forward, and like I said before, while you needed a big starter, do a 1 L, and let it ride, crash, decant, and step up to a 2L on the cake in the flask for your 2 L starter instead of jumping to 2L. Might help a bit.

    I bet you are fine though. It's Belgian, it cane be fermented warmer, and it can be underpitched to a degree for certain strains to really manipulate the ester and phenol profile.
     
  5. SFACRKnight

    SFACRKnight Grand Pooh-Bah (3,348) Jan 20, 2012 Colorado
    Pooh-Bah Trader

    I am going to address the og issue here. If the recipe was for 5 gallons and you were at 6.5 gallons of wort I am going to say yeah, you oversparged and wound up diluting your wort. If you have beersmith or another calculator punch the numbers in for a 5 gallon batch and then change ikt to a 6.5 gallon batch. You'll bepretty close to your expected og. Next time figure a boil off of 1 gallon an hour to get close and go from there. I live at altitude (6500 ft) and have a boil off of 1.5 gallons an hour. All my boils start at 7 gallons so I can have 5.5 in the fermentor. But now I am rambling.
     
  6. FATC1TY

    FATC1TY Pooh-Bah (2,564) Feb 12, 2012 Georgia
    Pooh-Bah


    Likewise, I'm much lower than you, but I know for a typical batch I do, 5.5 in the fermenter to yield 5 in the keg, makes me get around 7.5g pre boil for a 60-90 min boil generally.
     
  7. beer272

    beer272 Initiate (0) Sep 23, 2009 New Jersey

    64 IG meas/86 goal = 0.74 5G /~7G = 0.71 so you can see how the IG dropped. Yea over sparged a bit is a possibility.

    As for the yeast I would let it run. We do not know your mash temp. either. I recently did an AG (newbie too, 3rd batch AG) and think I mashed too high a temp, so pulled the wort out of fermenters and ran it through mash again with ~3# of grain to get enzymes working on breaking up sugar. Also then reheated the wort to make sure sanitary so was a long day. Now both are fine (pitched 2 different yeasts doing a parti gyle). So have ~ 2 3G size ferments going, one may bottle any day now as that was 2nd runnings.
     
  8. od_sf

    od_sf Initiate (0) Nov 2, 2010 California

    Also, good info to share would be: what yeast did you use? WL or Wyeast? Date of yeast manufacture? Ferm temps?
     
  9. VikeMan

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

    BigJoeC had (I think) at least two other threads on this beer. Both talked about the yeast issue.

    IMO, he underpitched, although someone told him that since he saw 'a rather large yeast cake at the bottom' that his yeast starter was 'OK.' Gotta love that kind of precision. Perhaps the advisor will now go to BigJoeC's house and fix the problem.

    BigJoeC: at this point, if you're not at or close to your expected terminal gravity, and you have this wort/beer sitting at a temperature near the yeast strain's high end, I'd probably pitch more yeast. And then I'd listen to Mr. Malty next time.
     
    herrburgess and PortLargo like this.
  10. BigJoeC

    BigJoeC Zealot (563) Jan 22, 2011 New Jersey

    I will be checking the gravity when I get home.

    I used WL Trappist Ale Yeast.

    Vike, I totally understand
     
  11. VikeMan

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

    Good call. Now that I'm more awake, I should have added... your beer may be fine. I shouldn't have jumped the gun on the pitch rate lecture. I mean, I still think this beer was underpitched, and if the beer turns out to have any of the issues normally associated with underpitching, that's where I'd look first. But it's not a foregone conclusion that this beer will have problems.
     
  12. BigJoeC

    BigJoeC Zealot (563) Jan 22, 2011 New Jersey

    What should I look for as an issue associated with underpitching? Basically, what would cause e to pitch another vial?
     
  13. VikeMan

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

    Here are some common issues...
    - high esters
    - high fusel alcohols
    - under-attenuation
    - high diacetyl
    - high sulfur compounds (particularly in lagers)
    - high acetaldehyde

    Most of these issues (if you indeed have them) could possibly be helped by pitching more yeast now. Esters are probably an exception though. The initial fermentation conditions are most of what influences eventual ester content, and esters are a result of a pretty complicated pathway. In fact, if you're successful at reducing existing fusels, your esters will actually increase.
     
  14. Tebuken

    Tebuken Initiate (0) Jun 6, 2009 Argentina

    I would pitch a rehydrated pack of SAF -T58 to finish fermentation, and I wouldn´t worry too much because aging this beer a little longer will cure off flavors, finally is a belgian beer.
     
  15. MrShake

    MrShake Initiate (0) Nov 7, 2013 Illinois

    don't overthink it... how do you KNOW your fermenation isn't roaring? Airlock activity is a POOR indicator of fermentation quality.....

    RDWHAHB (relax, don't worry, have a homebrew) and give it a few more weeks to do its thing. Changing something at this point is just guessing, unless gravity readings show a stuck fermentation.

    Pitching ANYTHING, including yeast, just increases your chance of infection on a beer that may very well be perfect just as it is.
     
  16. Tebuken

    Tebuken Initiate (0) Jun 6, 2009 Argentina

    I insist, rehydrated SAF T-58 yeast dissolved in boiled water will not add any risk of infection and this way you will complete your fermentation to reach your FG.
     
  17. BigJoeC

    BigJoeC Zealot (563) Jan 22, 2011 New Jersey

    OK. I just checked my gravity. After about 12 days of fermentation I have a reading of 1.010. As stated above I was off in my OG likely because I brewed too large. So, my OG was 1.064 instead of the targeted 1.084-1.087.

    I am going to assume my fermentation is close to complete. I still anticipate waiting for another week or so before I do anything.

    A few questions.
    How close to a Dubbel might this beer be? (I'll add the recipe below....at least what I did anyway)
    What might you suggest I do from here? Secondary? Any additions? (I would think a secondary for 2 weeks with no additions would be nice)

    Thanks for your help!

    8oz Special B Malt
    12oz Carapils Malt
    12oz Cara 20 Malt
    12oz Caramel 90L Malt
    5oz Chocolate Malt
    3oz Roasted Barley
    13lb Pilsner Malt

    Mashed at 155 for 60 minutes
    Batch sparged and started with 7 gallons
    Boiled 60 minutes
    Added:
    1oz Styrian Golding @60
    1lb Dark Candi Sugar @15
    Whirlfloc Tab @15
    1/2oz Czech Saaz @5min
    1/2oz Hallartau @5min

    Counter flow chilled to 75
    pitched the yeast starter explained in OP
     
  18. VikeMan

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

    If your gravity is stable by now (and I suspect it is, but measure in a couple days anyway), I'd probably bottle after a total primary time of about 4 weeks. I don't see any reason to secondary.

    By undershooting your expected OG, I think you actually made this more dubbel-like than the original recipe. Some aromatic and/or Munich malt would have been typical, and roasted barley is maybe not, but there's more than one way to skin a cat, and I've had many commercial dubbels that are anything but clones of each other.
     
  19. MrShake

    MrShake Initiate (0) Nov 7, 2013 Illinois


    Not to be argumentative, but just OPENING the fermenter introduces risk.... Such LITTLE time has gone by, and with a current reading of 1.010, there is no real benefit in repitching yeast
     
  20. Tebuken

    Tebuken Initiate (0) Jun 6, 2009 Argentina


    You got right but at the time I have posted my last post I didn´t know his beer had a 1010 FG, he posted it after my post.
    I am not afraid to open my fermenters, actually I do it very often and have no issues
     
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