Thought Experiment: Enhancing Malt Flavor

Discussion in 'Homebrewing' started by OldBrewer, Apr 12, 2018.

Thread Status:
Not open for further replies.
  1. OldBrewer

    OldBrewer Maven (1,385) Jan 13, 2016 Canada (ON)

    BA is an amazing forum where participants can provide their experiences and insights on how to better our craft, in a positive, constructive way.

    I was recently researching low oxygen brewing methods that could improve the "freshness" of the malt flavor that one notices when having a freshly-poured beer from a tap at a commercial brewery, that seems almost impossible to duplicate in homebrews. This is particularly true for such beers as light lagers and pilsners where the malt flavors play an important and noticeable role.

    My next thoughts turned to hops, and how the hop flavor and aroma are enhanced by adding hops during the later part of the boil, say at 15 minutes or less left in the boil. I was then wondering if a similar technique could be applied to the wort to give the resultant beer an enhanced fresh malt flavor and aroma.

    Thus I came up with the following theoretical process which I hope to try in a future brew.

    After the wort has boiled for 15 minutes (enough time for sterilization), take out about a liter of the wort in a sterilized container and set it aside to cool down quickly to fermentation temperature. Later, after the rest of the wort has completed its boiling, hop additions, cooling, etc., and just prior to adding the yeast to the fermenter, add the liter of wort back to the primary fermenter.

    Has anyone already tried this? Is anyone aware of any literature on a similar approach? Would it add more fresh malt flavor and aroma to the finished product? Are there any negative results that may be noticeable (e.g. chill haze)? I look forward to your thoughts on this thought experiment.

    Thank you.
     
  2. CarolusP

    CarolusP Zealot (590) Oct 22, 2015 Minnesota

    I know there have been past discussions on the forum about people doing 15-minute boils for the whole batch. Boil-off and hop adjustments need to be taken into account, but I seem to recall that nobody noticed any prominent DMS with 15-minute boils, which tends to be one of the big reasons for boiling longer. I don't recall if anyone specifically mentioned noticing a better malt presence. I recall that discussion taking place more in the context of trying to cut down on the length of a brew day.
     
  3. OldBrewer

    OldBrewer Maven (1,385) Jan 13, 2016 Canada (ON)

    Thank you! If it's true that there was no noticeable DMS, then certainly a one liter sample at 15 minutes would have a negligible impact on the entire batch (in terms of noticeable DMS). It may therefore be better to increase the amount to say at least 2 liters.
     
  4. Dave_S

    Dave_S Crusader (429) May 18, 2017 England

    Come to that, no boil at all is a thing - a normal mash temperature ought to be enough to sanitize the wort, and you can either add hop bitterness by making a "hop tea" or just not at all. I seem to recall a Larsblog post or two about this in the context of NE European farmhouse ales, and a lot of people seem to do Berliner Weisse and other lacto-sours that way

    The broader question, though, is whether what we describe as "fresh malt flavour" is actually the same as the flavour of raw malt.
     
  5. OldBrewer

    OldBrewer Maven (1,385) Jan 13, 2016 Canada (ON)

    That's a very good point! I could actually take the sample of wort right from after it has been drained from the mash. At that time, it has all sorts of malt aroma and flavor.

    Also good question as to what actually constitutes that "fresh malt flavor". Unless I have missed some literature and/or discussion, this seems to be a somewhat unexplored field.
     
    dmtaylor likes this.
  6. dmtaylor

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

    I like the idea, and wonder if maybe it might improve malt flavor. Don't know.

    Having just toured the Briess malting house here in Manitowoc, Wisconsin, I know there is tons of vegetal aroma that volatilizes during the malting process, the likes of which I'd never experienced before. It really makes me wonder how much of those aromas stay out of the malt, versus how much stays in until brew day, and whether a minimum boil time is necessary or not to get more of that out, without losing too much "maltiness". And just what components of "maltiness" are desirable or not desirable, anyway? As always, I'm sure it's in the eye of the beerholder. More real experimentation would be needed if I wanted to determine what *I* think the minimum boil time should be. I do think it's certainly interesting to think about and maybe play with in future.

    Cheers.
     
  7. billandsuz

    billandsuz Pooh-Bah (2,097) Sep 1, 2004 New York
    Pooh-Bah

    I associate great malt flavor with biscuit and bread character. So if I am trying to get that effect I will keep the late hop additions minimal if at all, use moderate to mild hops, keep the bitter under say 30 IBUs and most of all use Victory or Aromatci, maybe Vienna, anything to boost the malt profile.

    I do not think a beer should be everything either.

    We essentially get malt hops yeast and water. I choose one to play the leading role and the rest can be supporting characters. So I do go for big hop aroma and lots of malt flavr as well. That's my taste.

    I have not thought of holding wort for a later addition. That will increase some haze, probably DMS, mess up expected bittering, to name a few.

    Cheers.
     
    Tebuken likes this.
  8. JackHorzempa

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

    An interesting thought here.

    There are two aspects concerning boiling that would concern me here:

    Precipitation

    I would be concerned that the portion of the wort removed would not have experienced optimal precipitation from a 15 minute boil and this would impact the appearance aspect of the finished beer.

    Volatization

    A full 1 hour boil will drive off unwanted compounds with just one example being DMS (there are others).

    Would this method of brewing genuinely improve the malt flavor of the finished beer and does this ‘outweigh’ the topics discussed above?

    Cheers!
     
    Dave_S likes this.
  9. minderbender

    minderbender Initiate (0) Jan 18, 2009 New York

    One thing Lars mentions when he discusses raw beer is that its shelf life is greatly diminished compared to boiled beer. This would be a concern for me if I were experimenting with this approach.

    (That said, I've done a couple of no-boil Berliners and they seemed to age just fine.)
     
    Dave_S likes this.
  10. frozyn

    frozyn Maven (1,435) May 16, 2015 New York
    Trader

    Some interesting points. Regarding precipitation, I wonder if the cooling time the wort spends would help precipitate matter out of suspension, especially if one were to use a chiller of some sort. Could also toss in whirfloc or irish moss when the sample is pulled out initially?
     
  11. scottakelly

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

    What about beer clarity? I'm assuming that not boiling for long would hinder hot break?
     
  12. JackHorzempa

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

    A full hour of boil optimizes the precipitation aspect.
    I add rehydrated Irish Moss for the last 15 minutes of the one hour boil. I do not think adding these kettle finings to a portion of wort removed from boil would 'work'.

    Cheers!
     
  13. JackHorzempa

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

    Yup, this is the precipitation aspect I discussed above.

    Cheers!
     
    scottakelly likes this.
  14. Soneast

    Soneast Pooh-Bah (1,751) May 9, 2008 Wisconsin
    Pooh-Bah

    Many people claim to get a "richer" malt flavor from the no sparge method, including Gordon Strong. I believe he mentioned it in Brewing Better Beer?
     
  15. JackHorzempa

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

    You have a good memory:

    “This is the method suggested by Gordon Strong in his book, "Brewing Better Beer".

    Why do this? Apparently, it results in a richer and more-intense malt flavor, with less harshness compared to other methods, according to Strong; he also mentions that the resulting beer is also a bit deeper in color, with lower acidity. This may not be a technique you'd use for a hop-forward beer, such as an American IPA, but for malt-forward beers, such as Scotch Ales, it sounds like something worth trying.”

    http://meekbrewingco.blogspot.com/2012/10/no-sparge-brewing-simple-approach-to.html

    Cheers!
     
  16. OldBrewer

    OldBrewer Maven (1,385) Jan 13, 2016 Canada (ON)

    Thank you for all your excellent responses! There certainly is a lot to consider and test out. I hope to incorporate many of these ideas in my next brew.
     
  17. chavinparty

    chavinparty Zealot (653) Jan 4, 2015 New Hampshire

    I never do a mash out temp because of that book and I think it makes a better beer fwiw
     
  18. VikeMan

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

    A mash-out is not the same as sparging. I don't recall Strong's book advising against mash-out temps. I think that would have caught my eye, since I almost always mash-out. Can you point to where he says that?
     
  19. SFACRKnight

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

    I thought this was going to be about Schröedingers beer.
     
    Elvis_on_Bass, frozyn and dmtaylor like this.
  20. VikeMan

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

    The beer exists in a superposition of malty and not malty, until tasted by an intelligent observer.
     
Thread Status:
Not open for further replies.