The effects of heat on beer...

Discussion in 'Beer Talk' started by RabNath, Feb 27, 2012.

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  1. RabNath

    RabNath Initiate (0) Jan 2, 2010 New York

    not sunlight, but long periods of time where the beer has exposed to pretty warm temperatures...
  2. hopfenunmaltz

    hopfenunmaltz Poo-Bah (1,867) Jun 8, 2005 Michigan

    For every 10 degrees C, you speed the aging by a factor of 2. Best to keep it cold, or at celler temps.

    Breweries do accelerated aging by taking the beer up to a high temp, say 140F for a few days.
  3. diesel59

    diesel59 Initiate (0) Jan 3, 2012 New York

    1st rule of beer club.... don't let beer get warm...
    2nd rule of beer club.... refer to rule #1
  4. yamar68

    yamar68 Initiate (0) Apr 1, 2011 Minnesota

    The most noticeable and, in my opinion, disgusting effect of prolonged heat exposure would be coagulated proteins. I've experienced this more than once with Brew Dog IPA. Basically, the head of the beer will become a nasty, thick, curdled, offensive goop.
  5. UCLABrewN84

    UCLABrewN84 Initiate (0) Mar 18, 2010 California

    This is 'Mericuh. Use Fahrenheit.
  6. wyatt

    wyatt Aspirant (217) Nov 18, 2009 Louisiana

    is this real?
  7. marquis

    marquis Champion (816) Nov 20, 2005 England

  8. leedorham

    leedorham Initiate (0) Apr 27, 2006 Washington

    Huh? Which breweries? Source?
  9. harrymel

    harrymel Initiate (0) Dec 15, 2010 Washington

    Dude, simple science. 10 degrees C creates a time warp. 30 degrees C creates a cubic warp. 1911 degrees C creates a Wyatt Earp.
    leedorham likes this.
  10. tjensen3618

    tjensen3618 Initiate (0) Mar 23, 2008 California

    Deschutes did it when testing for infection in the '09 Abyss if I remember correctly.
    I have no idea of the math, science, or numbers behind what they did, but I know they said exposed it to higher temp to accelerate aging.
  11. JdoubleA

    JdoubleA Initiate (0) Apr 27, 2011 North Carolina

    I've found that the hotter it is outside , the quicker beer seems to get gone.

    The same thing also happens the colder it is outside.

    Regular conundrum right there.
  12. jesskidden

    jesskidden Poo-Bah (2,320) Aug 10, 2005 New Jersey
    Society Trader

    It's a pretty common "rule of thumb" in the industry, if it's the effect of storage temperatures you're questioning as being "real".

    Here are two similar quotes:

    "For instance temperature extremes during shipping, warehousing and at the retail store you purchase your beer from can double the "aging" of the beer for each increase of 10 deg. F. That means beer with a "shelf life" of 6 months at 40 F will have a "shelf life" of 3 months at 50 F and 6 weeks at 60 F."
    Mark Ruedrich, brewmaster, North Coast Brewing Company (in reply to an old BA forum question)

    “Shipping and storage temperatures are important to beer flavor. Beer contains a variety of compounds that are capable of autoxidation if temperatures get high enough. In practical terms, beer that has been held at 38° C (100° F) for two weeks will have the same loss of freshness in flavor as beer that has been held for three months at 21° C (70° F) or beer that has been been held for more than one year at 4° C (39° F).”
    Handbook of Brewing By William A. Hardwick, 1995
  13. leedorham

    leedorham Initiate (0) Apr 27, 2006 Washington

    That may be so, but it doesn't mean the beer is "aging" faster. If that were really true, then Deschutes would label the abyss with "For best results, store in oven on plate warmer setting for 2 days then drink."
  14. jesskidden

    jesskidden Poo-Bah (2,320) Aug 10, 2005 New Jersey
    Society Trader

    The OP's question was the effect of heat on beer, so we're discussing "aging" in the sense of a fresh beer getting old and becoming stale. It's why many breweries print Please Keep Refrigerated on their packaging (a request that is all too often ignored at the retail level).

    It's not the sort of "aging" (and I've always preferred the term "cellaring" for this reason) one does purposely with beers brewed to withstand longtime storage at cellar temperatures and will hopefully benefit from the changes that time will bring to those beers. I mean, some beers can be said to be aged but some are just old.

    Granted, that if the OP was asking about "long periods... of warm temperatures" for his cellared beers, he probably should request that the thread be moved to the Cellaring forum.
  15. hopfenunmaltz

    hopfenunmaltz Poo-Bah (1,867) Jun 8, 2005 Michigan

    Maybe I should have said staling instead of aging, which many think of as keeping the beer at 50F (10C for those that are more technical). Aged beer is from the flavors of redox reactions, and those beers go stale given enough time at 50F.

    Accelerated aging test are known in the industry. Larger breweries with labs do those tests. I may have heard about that at one of the NHC's, either Ray Daniels or Randy Mosher's talks. Or Dr. Bamforth.

    Search for "the Arrhenius equation" to get the general background on reactions at higher temperature.
  16. RabNath

    RabNath Initiate (0) Jan 2, 2010 New York

    Perhaps I should have given more specifics when asking this question. I've got several bottles of beer sitting aside, I'm not really cellaring them per se, but they're not the beers I would just grab when I want a drink either, so I'm saving them for a while (all beers that can be aged however, tripels, strong darks and a flanders red). We're having a crazy winter here in NYC, or rather lack of winter. The heat in my apartment is controlled by the building, not by me, and it's been a bit hot as of late...
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