"Correct" Fermentation Temps

Discussion in 'Homebrewing' started by Curmudgeon, Jun 25, 2014.

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  1. Curmudgeon

    Curmudgeon Savant (1,110) May 29, 2014 Massachusetts
    BA4LYFE Society

    John Palmer on basic fermenting temps:
    My first batch of beer is in fermentation now. I pitched the yeast at around 68*F - 70*F. I wanted to pitch around 65*F but couldn't quite get it that low. It stayed at 70*F for the first day and a half and then when the magic started (as you all know) the temp went up. It was around 77*F for about a day when the fermentation kicked in aggressively. I put a cold wet towel around the fermenter to try to get the temp down a bit and went to work. After work, the temp had settled to about 74*F. This morning when I checked it was back down to around 70*F. (Temp drop was probably more due to the fermentation activity settling down than my damp cold towel.)

    I was nervous about this heat because I was hoping to be in the 65*F - 68*F range based off of John Palmer and many forum postings. Then I went to the White Labs site and looked up my specific strain of yeast: WLP550 Beligan Ale yeast. I was a little surprised to see this:
    That seems high, no? I saw some charts out there explaining how you'll get different flavors out of your beer if you ferment at the low-range, mid-range and high-range of the spectrum but still thought this range was high.

    Do you guys use the recommended ranges that White Labs provides? I'm sure you veteran brewers out there have founds the ranges that you prefer through years of trial and error. I find this all pretty interesting and would just like to hear some thoughts on it.

    As always, thank you for reading and for any feedback.
     
  2. Tebuken

    Tebuken Initiate (0) Jun 6, 2009 Argentina

    That fermentation temperature will not hurt your beer, this yeast strain performs better at the high edge.I figure you have brewed a Belgian style.
     
  3. JackHorzempa

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

  4. VikeMan

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

    They are okay as general guidelines, but the results can vary considerable at different ends of the recommended ranges, and beyond. I say beyond, because the recommended ranges are not gospel. Hell, the White Labs and Wyeast recommendations are often not the same for the same yeast strain.

    The temp to choose depends not just on the yeast strain, but also on the style you're brewing and the specific results you are looking for.
     
  5. Curmudgeon

    Curmudgeon Savant (1,110) May 29, 2014 Massachusetts
    BA4LYFE Society

    Yes, "supposed to be" a Belgian Pale Ale. We'll see!

    This chart is cool. Thanks!

    Ahhhh yes, the frustrations and rewards that brewing can bring!
     
  6. mattbk

    mattbk Savant (1,111) Dec 12, 2011 New York

    Belgian yeasts are okay at a bit higher temps. A typical protocol for a Belgian-style fermentation is to start in the lower end of the tolerance (say 64-68 deg F) then allow the temperature to free rise (into 70s is okay, into 80s not unheard of). This allows for a well attenuated and often dry finish. Starting low prevents any fusel or solvent character, while the higher finishing temps result in a nice ester and higher alcohol profile as well.

    Be cautioned also that some of these strains (WLP500 being one example) can stall if cooled prematurely. For the most part with these Belgian strains, it's okay to pitch and let 'er rip with relatively less control (within reason of course - 100+ degrees may be a bit too high).

    The Chouffe strain your using is pretty great and I expect you'll have a nice beer based on your fermentation schedule.

    Btw - this type of schedule would NOT be okay for other yeast strains. You'll want to look into an improved chilling method for making lagers or clean American-style ales.
     
  7. Curmudgeon

    Curmudgeon Savant (1,110) May 29, 2014 Massachusetts
    BA4LYFE Society

    This is good to hear, mattbk. Thanks for the info and the tip on "other yeast strains". I've already started looking into solutions for fermentation temp control. The ol' swamp cooler method looks like it could work but seems a bit tedious (definitely doable). I will need to be careful if I'm to brew again in July or August - might hit 90*F in beantown today! Hmmm, birthday's comin' up soon. Maybe the wife can get me a chiller box!!!
     
  8. MLucky

    MLucky Initiate (0) Jul 31, 2010 California

    I usually get the best results pitching a few degrees below the recommended range, letting it rise a bit during peak fermentation, and then sometimes venturing to the high end of the range once fermentation seems nearly complete just to ensure a good "clean up." Generally speaking, higher temps will give you more esters (which can be desirable) but also more fusels (which are not).

    What happened with your beer is very typical for new brewers who don't yet have the equipment needed to fully manage fermentation temps. The higher temp may give you some off flavors and some fusels, or it might not. (My first beer fermented too hot and tasted like green apples. I drank it anyway.) Either way, I highly recommend getting some sort of set up that enables you to carefully control fermentation temps as soon as you can. It's really one of the most important aspects of brewing.
     
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  9. JackHorzempa

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

    “The ol' swamp cooler method looks like it could work but seems a bit tedious…”

    One way to implement swamp cooling is by placing the fermenter in a shallow Rubbermaid type tub/pan and wrap a towel (or T-Shirt) around the fermenter to wick up the water that you place in the tub/pan. Then direct a small fan on the wrapped fermenter to encourage evaporative cooling. You just need to monitor the water level to ensure that it doesn’t ‘dry up’. Is that too tedious?

    I should caveat that the above method will bring down the temperature a few degrees (5-10 degrees). It will not bring something at 90 degrees down to fermentation temperatures.

    Many homebrewers simply stop homebrewing in the summer time. They do this for temperature reasons but another potential consideration is that the amount of wild yeast in the air is much more in the summertime. Drinking a beer that has experienced a wild yeast infection is often not pleasant.

    Cheers!
     
  10. Curmudgeon

    Curmudgeon Savant (1,110) May 29, 2014 Massachusetts
    BA4LYFE Society

    Nope, sounds pretty easy. I actually put a wet towel around my fermenter for a day when it was hitting high 70s*F during its very active fermentation stage in the beginning. Seemed to help a bit but the Rubbermaid type solution sounds better! Thanks!
    Yeah (sigh), I'm afraid I might just hold off until late summer/early fall. Boy, I really did pick the worst time to get into homebrewing! Guess it gives me time to read up so I can go all "Eye of the Tiger" on this stuff in the Fall!

    Wild yeast infection does not sound cool! :angry:

    Thanks for the tips JackHorzempa!
     
  11. VikeMan

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

    It's not, but many of us brew year 'round and have never had a wild yeast infection. Practice good sanitation and I think you'll be fine.
     
  12. Curmudgeon

    Curmudgeon Savant (1,110) May 29, 2014 Massachusetts
    BA4LYFE Society

    I've been afraid to mention this but I used a 23qt pressure cooker pot as my brew pot for my first batch. I cooked food in it a couple times in the past. I always kept it clean though. I think it's heavy gauge aluminum, not stainless. Before boiling my wort in it, I cleaned it and then used about 3Tbsp of bleach in 5 galllons of water and let that sit for about 30minutes. Later, I read that bleaching metals over 30min could create corrosion and pitting.:grimacing:

    Do you guys think my pot is ok for wort boiling? Should I invest in a stainless steel brew pot instead? Stainless steel is the best option, right? Aluminum being inferior to stainless steel I'm guessing.

    Sorry for getting off topic here just seems like a good point to bring it up. I understand sanitation is critical in all this and I want to mitigate any sanitation setbacks if I can.
     
  13. JackHorzempa

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

    You are welcome.

    Summer time brewing does not necessarily result in a homebrew having noticeable effects from wild yeast. There are just more wild yeast in the air which needs to be recognized. There are a number of steps which can be taken to minimize the chances of a wild yeast infection:

    · Pitch ‘more’ brewer’s yeast with the hope that they will ‘take over’ and somewhat ‘muscle out’ the wild yeast that are present.

    · Properly oxygenate/aerate the wort to give the brewer’s yeast a ‘jump start’; but maybe this helps the wild yeast as well so it is a zero sum game?

    · Minimize the time that the wort is exposed to the ambient air; put the cooled wort into the fermenter quickly; oxygenate/areate quickly, pitch the yeast quickly and seal up the fermenter quickly. The less time the cooled wort is exposed to the ambient air the less wild yeast will get into the wort.

    Practicing good sanitation is something that you should do for every batch regardless of season.

    Cheers!

    P.S. I brewed an English Ale in June a few years ago which unfortunately had more wild yeast in it then I desired. There were no perceptible flavors from the wild yeast infection but the resulting beer was more carbonated then I desired. I used very little priming sugar to create a lowly carbonated beer (to mimic a cask ale). That beer ended up being at a normal CO2 level (about 2.3 volumes of CO2). The beer was tasty but just more carbonated then I desired for that particular batch. The wild yeast consumed the Maltotriose (a sugar) in the beer that the brewer’s yeast (Danstar Windsor) did not completely process.

    Edit: I should have also have mentioned that minimizing exposure to the ambient air should be practised during the packaging (bottling) of the beer. Wild yeast can get into the beer and if there are any fermentables left the wild yeast will 'eat' them.
     
    #13 JackHorzempa, Jun 25, 2014
    Last edited: Jun 25, 2014
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  14. VikeMan

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

    There's nothing wrong with using an aluminum brew kettle. I would however recommend getting a larger kettle (either SS or Aluminum) so that you can do full wort boils for 5 gallon batches (assuming that's your batch size).
     
  15. Curmudgeon

    Curmudgeon Savant (1,110) May 29, 2014 Massachusetts
    BA4LYFE Society

    VikeMan, here's a stupid question: Is a "full wort boil" when the wort is 100% of the batch? Worded more clearly - for my first batch, I put 2 gallons of previously boiled water (cooled to 65-70F) in the fermenter, boiled 3 gallons of wort (cooled to about 70F) then pitched the yeast in, then dumped the 3 gallons of wort into the fermenter. So mine was more of a "3/5 wort boil"? Am I on the right page?

    If so, then yup, I'm gonna need a bigger boat!
     
  16. VikeMan

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

    Exactly.

    ETA: I meant you have it exactly right, not that it's a stupid question.
     
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  17. minderbender

    minderbender Initiate (0) Jan 18, 2009 New York

    @JackHorzempa has a lot more brewing experience than I do, and I would generally defer to his advice, but I have to say I think his fear of summer-time wild yeast is a little bit idiosyncratic - I haven't heard of anyone avoiding summer-time brewing for this reason. We are talking about a low-probability event in any season. (Lightning deaths are also much more common in the summer, so you should take prudent steps to protect your safety, but I wouldn't let it keep you from brewing outdoors unless a thunderstorm is forecast.) I also think it's a little hasty to blame wild yeast for an over-carbonation problem, where there isn't any other evidence for contamination. Maybe, but maybe not. I haven't found carbonation to be a very precise enterprise. All of that said, his advice about minimizing exposure to the air is good.

    One thing that some people do during the summer is brew beers that are more heat-tolerant, such as saisons. @OldSock just published a post on this topic, although he noted that even with saisons you have to pay some attention to the temperature of the fermentation.
     
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  18. Curmudgeon

    Curmudgeon Savant (1,110) May 29, 2014 Massachusetts
    BA4LYFE Society

    LOL! Thanks!
     
  19. Curmudgeon

    Curmudgeon Savant (1,110) May 29, 2014 Massachusetts
    BA4LYFE Society

    I hear ya, minderbender. I think JackHorzempa is just letting me know of the nasty possibilities that exist out there. It's all good and I really appreciate any and all advice I've been getting here. Actually, it's great that he mentioned it - the photos I posted of my first batch in another thread expose my open kitchen window! That would certainly invite some unwanted "stuff" into my batch. I will be more careful in the future for sure!

    I love that you took the time to link the NWS Lightning Safety siite! Awesome!
     
  20. ssam

    ssam Pundit (997) Dec 2, 2008 California

    You do not need to use bleach or anything else to sanitize your brew kettle prior to boiling; it just needs to be clean. Boiling sterilizes the wort and anything else around it. That includes the kettle, spoons, thermometer, etc. You sanitize everything that comes in contact with the wort after the boil.
     
    #20 ssam, Jun 25, 2014
    Last edited: Jun 25, 2014
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