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HOMEBREW Digest #3892
HOMEBREW Digest #3892 Mon 18 March 2002
FORUM ON BEER, HOMEBREWING, AND RELATED ISSUES
Digest Janitor: janitor@hbd.org
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Contents:
Using pH test paper: How?? ("Parker Dutro")
RE: Beer to style ("David Houseman")
RE: Asheville NC ("Steve Jones")
oxidized wort/oxidized hops ("Steve Alexander")
re: w3068 ("Nathaniel P. Lansing")
Re:10 gallon cornies (Bill Wible)
Stuck final gravity (Al Klein)
New York (Al Klein)
Re: oxidized wort/oxidized hops ("Phil Yates")
Out of Style (Calvin Perilloux)
Secondary fermentation inactivity (Micah Anderson)
Iodophore Stain Removal ("Fred L. Johnson")
Update: Bill Pfeiffer Memorial Mazer Cup ("Jason Henning")
Club lists on HBD server (Pat Babcock)
Daniel's water woes (Pat Casey)
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Date: Fri, 15 Mar 2002 23:35:53 -0800
From: "Parker Dutro" <ezekiel128@edwardwadsworth.com>
Subject: Using pH test paper: How??
Why not use a pH test kit, the kind with a guide sheet showing different
colors representing acidity levels and the vial/liquid test solution. Fill
the vial halfway with water and put three drops of the stuff in and compare
it to your chart. I used them when I used to grow flowers and they worked
weel. Is there a reason we couldn't use these bad boys?
Parker
------------------------------
Date: Sat, 16 Mar 2002 07:55:06 -0500
From: "David Houseman" <housemanfam@earthlink.net>
Subject: RE: Beer to style
"I am curious what the judges out there think of when seeing a beer recipe
not to style. For instance a Bitter that clocks in at 1.041 when the
guidelines call for a maximum SG of 1.038? The slightly stronger beer
should taste better and potentially mask some flaws. Do judges in the AHA
contest see recipes? Would an ordinary bitter be kicked up to Special
Bitter? What about a Bock at 1.060 when it should be 1.068? Not that I am
speaking from personal experience. :>)"
David,
No, judges do not see the recipes. We only get a bottle of your beer that
has been marked with a number so that it is anonymous. We're told what
style it is and we judge to that style. Some judges will be more sensitive
to and aware of the subtle difference in what the original gravity of the
beers. Many will not. The minor differences you noted, 1.041 vs. 1.038 or
1.060 rather than 1.068, may not be noticeable in the final beer, dependent
on the malts and hops used and mash schedules. It's the final beer that
we're tasting, not the original wort. But if you start with a gravity
that's too high and don't balance with additional hops, it may throw off the
final balance. Or you result with too much alcohol that's noticeable in the
flavor profile. If you started with a lower OG than the style guidelines
call for it might still turn out to finish on style, but again you might
need to correct the hops to match. A Bock at 1.060 OG that was mashed to
yield more unfermentable dextrins may compensate for the lower OG and turn
out tasting right on style. Remember that the style guidelines are just
that, guidelines. Enjoy and have fun.
Dave Houseman
------------------------------
Date: Sat, 16 Mar 2002 07:56:09 +0100
From: "Steve Jones" <stjones1@chartertn.net>
Subject: RE: Asheville NC
Brad asked about places in Asheville, NC.
Asheville Brewer's Supply is on Wall St downtown - Andy is the
proprietor.
Jack of the Wood Brewpub is on Patton Avenue - good Irish pub
atmosphere, good beer, but I've never eaten there.
Barley's Taproom - not a brewpub, but has 40+ taps, and good pizza.
Asheville Pizza - On Merrimon Ave, this is a brewpub/pizza parlor/Movie
Theater. Great place that used to run B movies, but now is first run.
French Broad Brewing - new micro near Biltmore - I've heard from a few
folks the beer is good, but don't know if they give tours or what.
Highland Brewing - micro in the basement of Barley's, great beer. Go
down and ask for a tour.
Steve Jones
Johnson City, TN
stjones1@chartertn.net
http://users.chartertn.net/franklinbrew
------------------------------
Date: Sat, 16 Mar 2002 08:22:42 -0500
From: "Steve Alexander" <steve-alexander@worldnet.att.net>
Subject: oxidized wort/oxidized hops
Phil Yates beckons ....
>. But I'm curious about this point:
> Most of us go out of our way to get as much oxygen as we can into our
wort
> just prior to dumping in our yeast. What happens if we don't dump in our
> yeast, or not immediately?
In one reference it was noted that saturation levels of O2 in fresh wort
will disappear via oxidative processes in about 7 hours - no yeast needed.
I just read a paper that suggested that under brewery conditions that it was
best to oxygenate the wort four hours after pitching since that's about when
the yeast are ready to use oxygen. This paper also suggested that
variability in when yeast ae reaady to use O2 is one of the factors that
determines the variability in pitching-time O2 requirements for various
yeast.
> What happens if we run our wort from the kettle, heavily aerate it and put
> it in a sealed container free from infection? What happens if we leave it
> there for a good month before throwing in our yeast?
The free O2 will be long gone into oxidation products.
I'll go you one better. I've pressure canned wort (~13P pale ale unhopped)
and kept one jar for 2+ years at room temp - the stuff has turned dark over
time, leaving cleared wort and thick break on the bottom. It was not
particularly oxidized at the time of canning. In honor of your question
I've opened the jar.
The color (in a wine glass) is like cola - brown with hints of red. The
aroma has a big tootsie roll tone with a thin almost floral malt aroma on
top - not at all fresh but a certain vibrant sense to the aroma. Really a
quite attractive aroma - tho' very odd. The flavor is of course sweet (it
is unhopped wort) but with unexpected tart 'tinny' acidity - strongly
tasting of aldehydes .... not cardboard so much as autumn leaves. Its quite
reminiscent of a bottle of white vermouth that I once came across that was
stored uncorked for months - sweet & swimming with aldehydes. If you swish
the stuff around on your palate the tootsie roll and some stinging aldehydes
come thru.
I think I'll pitch yeast in this stuff just to see what happens.
> My bet would be that the end product would have serious oxidization
> flavours.
At least the stale wort would be oxidized. No amount of oxidation of wort
is good, yet all worts pick up oxygen during processing (and especially our
small batch sizes). Yeast fermentation is capable of driving the effects
back for a while, even reversing certain aspects of oxidation, but times and
temps give advantage to the less palatable oxidation products.
> Now I reckon that is a very good description of resulting oxidization
> flavours in beer. Rusty or metallic.
A tinny note in this one, but cardboard, aldehydes, ranidity ....
-S
------------------------------
Date: Sat, 16 Mar 2002 09:12:50 -0500
From: "Nathaniel P. Lansing" <delbrew@compuserve.com>
Subject: re: w3068
I talked to a technician at Wyeast to see if he had any
insight as to the problem of lower clove flavor with
repeated pitching; he has reports of it from a few
pubs but not all users have the problem. If it was a
matter of how the yeast was harvested raised the
question of "would the POF gene be related in some
way to floculation?" that seemed questionable but not
totally ruled out. The best guess that we agreed upon
is that was the pitching rate that would most likely
cause the effect in that, though not an ester, the 4VG
produced would be in lower proportion to the banana
ester since a high pitching rate would produce a
greater heat-kick which would increase the banana
ester proportion, making it seem like there was lower
clove production. This would happen if cooling capacity
wasn't sufficient to keep up with the heat-kick, which is
maybe why only a few pubs experience the problem.
Without pitching rate numbers, methods of harvesting,
and fermentation temperature profiles it is very much a
shot in the dark. I do remember a discussion here
(or maybe the other beer forum) of how British researchers
recommended a pitching rate of about 2.8 million/ml for
proper flavor developement in weisenbier.
Here's some interesting stuff I just found:
>>A number of factors are very important to fermenting a good
>>weisbier. Some of these factors are:
>>Open Ferment - to skim off the bitter resins during the initial
hop drive.
>>Temperature (for proper phenolic.ester mix)
>>Pitching Rate (1% active slurry by volume)
>>Aeration and/or underaeartion for proper ester production
>> (aerate 25% of wort)
(used without permission from...
http://www.tiac.net/users/tjd/bier/stark3.html )
Somewhere along the way I also saw some mention
of (dare I say it?) fermenter geometry.
N. P. L.
------------------------------
Date: Sat, 16 Mar 2002 10:41:07 -0500
From: Bill Wible <bill@brewbyyou.net>
Subject: Re:10 gallon cornies
Steve asks about 10 gallon cornies.
The 5 gallon cornies are commonly available, though the
word is that they are going to be getting harder to get
soon, because the soda companies are switching to the
'bag in box' systems.
The 3 gallon cornies are still relatively available,
though I've found them difficult to come by, and
expensive when they can be found. The ones I have
for my own use I bought new.
The 10 gallon cornies, in my experience, are the
rarest birds of all. I have never had one, and do
not know the dimension. They are not commonly
available, and when they can be found they go for
outrageous prices. I've seen them go for over
$200 each on ebay.
The reason they are so hard to come by is that everybody
cuts them up and makes conical fermenters out of them,
due to their size. They are highly desireable, and
are next to impossible to get around here. They are no
longer made as far as I know, so you can't even buy
one new.
Bill
- --------------------------
Brew By You
3504 Cottman Ave.
Philadelphia, PA 19149
215-335-BREW (PA)
215-335-0712 (Fax)
www.brewbyyou.net
- ---------------------------
------------------------------
Date: Sat, 16 Mar 2002 12:25:05 -0500
From: Al Klein <rukbat@optonline.net>
Subject: Stuck final gravity
Walter J Doherty asks:
>I'm thinking about re-aerating and pitching a good starter to see what
>happens.
I would - but without the aeration. Pitch at high kraeusen. (Make
the starter with a little of the wort that's stuck.)
>My second thought is that, since this was an all-grain brew, maybe the
>mash temp was too high, leaving me with a bunch of unfermentable dextrins.
>It was a pretty new setup and I'm now unsure about the temperature
>calibration. But the wort tastes sweet - are dextrins sweet?
Yes - that's one way of making the final beer sweet. If that's the
problem you have a sweet beer. If not, the repitching should bring
the SG down. Just don't go too far in the other direction and brew
bubble gum - 65-68dF is good.
- ---
[Apparent Rennerian 567.7, 95.9]
Al - rukbat at optonline dot net
------------------------------
Date: Sat, 16 Mar 2002 12:27:45 -0500
From: Al Klein <rukbat@optonline.net>
Subject: New York
Kevin Boyer said:
>Rocky Sullivans down on Lex is a neat place as well, but a wee bit out
>of walking distance. www.rockysullivans.com
But it's easy to get around Midtown with busses - they're all over the
place.
- ---
[Apparent Rennerian 567.7, 95.9]
Al - rukbat at optonline dot net
------------------------------
Date: Sun, 17 Mar 2002 09:02:47 +1100
From: "Phil Yates" <yates@acenet.com.au>
Subject: Re: oxidized wort/oxidized hops
Steve
Thanks for your response. I was hoping you might comment on the matter.
During the last six months or more of drama with Ansett Airlines, my only
brewing has been using wort kits. These are a full mash wort made to a
gravity of about 1054 and sold in 15 litre containers. It is recommended to
dilute them with 3 to 5 litres of water. I was adding my own hop tea. Very
handy if you need to keep up a supply of beer but haven't the time to be
doing full mashes.
Interestingly Steve, this brewing concept is akin to the idea you floated a
couple of years back with your "Brave New Brewery" posts. Also
interestingly, Jeff Irvine claimed when he was out here that if someone else
would go to the bother of producing the wort, he would be quite happy to
spend his days simply experimenting with the ferment.
After six months of using wort kits, I can comment that one can produce some
excellent beers this way but it is hardly a rewarding or satisfying concept.
I guess it just depends on what you want from your brewing. Well we all want
a good end product, but the process required to achieve that is really what
brewing is all about.
But to get on to the reasons for my oxidization (oxidation- same thing as
far as I know) questions. In one beer produced from a wort kit I detected
some slight oxidization flavours. Now this could not have happened here.
Having achieved success with my "Yeast under CO2" experiment I now pump the
Baron's Brewhouse full of CO2 prior to any brewing activity. This of course
requires brewing with an oxygen mask on but a well worthwhile precaution all
brewers should take. I digress even further.
It occurred to me that during packaging of the wort kit, it is highly likely
that some oxygen is getting into the wort. This is just the time when a
brewer would want O2 in his wort assuming he is about to pitch his yeast.
Well I note Steve you have a paper suggesting about four hours later, and
this may well be true. But oxygenated wort (even in sterile packaging)
surely should not hang around for any length of time prior to fermentation.
Thanks for your answer Steve. As you well know I am a bumbling fumbling
buffoon of a brewer with not an ounce of scientific background to back up my
outrageous statements.
As for your description of your two year plus wort in a jar which you opened
for my benefit, I can only say I like it. The description I mean. Please
pursue the concept of a dictionary of beer descriptions. I'm going to start
sniffing everything in sight in the hope of being able to contribute. I
guess this means I am going to have to take my oxygen mask off!
Cheers
Phil
------------------------------
Date: Sat, 16 Mar 2002 16:52:41 -0800 (PST)
From: Calvin Perilloux <calvinperilloux@yahoo.com>
Subject: Out of Style
David Craft asks about beers that are entered in the
wrong category in a comp, specifically an example of
an over-gravity Bitter.
>> The slightly stronger beer should taste better and
>> potentially mask some flaws. Do judges in the AHA
>> contest see recipes? Would an ordinary bitter be
>> kicked up to Special Bitter?
The slightly stronger one might well taste better indeed,
but a good judge takes that into account. Too much body,
or too high an apparent alcohol content, can signal to
a perceptive judge that this beer is "Out of Style".
It can still be good beer, but it wouldn't get full
points because the raison d'etre of a session bitter,
for example, is NOT to have something overly flavourful,
heavy, and alcoholic. It's a tough part of being a judge,
too, reminding one's self that this great beer in front
of me is, well, not quite what we wanted.
Do the judges see the recipes? No. And if that were
to be used in a Nazi attempt to enforce style guidelines,
some people could just "adjust" the copy of the recipe
to match, so it would be pointless. That said, there
is many a time when, as a judge, I would have LOVED to
have seen the recipe to find out what the brewer did to
get a particular flavour/aroma attribute (++ or --).
And finally, would the beer be shifted category? No.
I've even seen that point debated in organisations
outside the BJCP/AHA as they developed guidelines,
and the BJCP probably debated it for 30 seconds, too.
What kind of hell would break loose if the comp organiser
started assigning beers to a different catergory... and
the beers did poorly! Oh, no, not a chance on that one!
Besides, part of being a "good brewer" is knowing that
you have XXX and not YYY style in your bottle, regardless
(and I can say this from experience) of what your original
brewing intent was.
Calvin Perilloux
Middletown, Maryland, USA
------------------------------
Date: Sat, 16 Mar 2002 21:54:42 -0500
From: Micah Anderson <micah@riseup.net>
Subject: Secondary fermentation inactivity
Got together with some friends the other week to collaboratively make some
beer. Each of us has a basic setup, so we could make 5 gallons a piece,
resulting in three different batches for our sampling pleasure. A porter, a
nut brown and a spruce lager. Everything went just fine, we used liquid
yeast, malt extract, some leafy hops, etc. The primary fermentation went
well on all of them, the porter ended up not having any foam on the top once
finished (the others had a small layer). We moved everything into the
secondaries and the lager took off bubbling the airlock, the nut brown and
porter were silent. Almost a week later, the nut brown and the porter still
haven't bubbled the airlock. Did we loose our yeast somehow? We pretty much
did everything the same, sanititzed everything... should we just be patient?
We are fairly beginner at this, but have done a batch before without
problems...
Thanks for any insight you might have!
Micah
------------------------------
Date: Sun, 17 Mar 2002 07:09:50 -0500
From: "Fred L. Johnson" <FLJohnson@worldnet.att.net>
Subject: Iodophore Stain Removal
Is there a good way to remove Iodophore stains from vinyl flooring, Formica
counter tops, etc. Stains on kitchen surfaces resulting from a brief
exposure to Iodophore often disappear or at least diminish considerably
after several days. More recently, however, I am seeing what look like
Iodophore stains appearing on my kitchen vinyl floor where there was no
obvious initial stain. It looks like many small exposures to dilute
Iodophore are showing up now.
If I don't get help soon, my wife may kill me. If I have to get new
flooring (and we needed it anyway), does anyone have recommendations of a
resistant material? Polyurethane finished hardwood? Tile? Perhaps just
something darker than white would be helpful.
- --
Fred L. Johnson
Apex, North Carolina
USA
------------------------------
Date: Sun, 17 Mar 2002 10:45:58 -0500
From: "Jason Henning" <jason@thehennings.com>
Subject: Update: Bill Pfeiffer Memorial Mazer Cup
Wow! What a way to kick off the Bill Pfeiffer Memorial Mazer Cup judging. We
had 15 judges knock out 12 flights. We had planned on only a single session
but after the pizza break, 8 of the judges said they were ready for another
session. An organizers dream! We really had a solid group of judges and the
meads were fantastic too.
I think that we'll be able to maintain our schedule since we had such a
productive first day. We've got 5 flights and Melomels mini-bos scheduled
for weeknight sessions. That should leave us with just the Best of Show on
Saturday. I will, of course, post all the details then.
And the last thing I'll say is the quality of meads is just amazing. Great
job folks!
Cheers,
Jason Henning
------------------------------
Date: Sun, 17 Mar 2002 22:17:07 -0500 (EST)
From: Pat Babcock <pbabcock@hbd.org>
Subject: Club lists on HBD server
Greetings, Beerlings! Take me to your lager...
If you are a club or other organization using the majrodomo list
server on HBD, be advised that it has creashed and is being
rebuilt. The RBL system appears to not have been impacted by
this (unless you subscribe to the Digest version).
We are working as quickly as possible to resolve this
issue. Your patience is appreciated.
- --
-
God bless America!
Pat Babcock in SE Michigan pbabcock@hbd.org
Home Brew Digest Janitor janitor@hbd.org
HBD Web Site http://hbd.org
The Home Brew Page http://hbd.org/pbabcock
[18, 92.1] Rennerian
"The monster's back, isn't it?" - Kim Babcock after I emerged
from my yeast lab Saturday
------------------------------
Date: Mon, 18 Mar 2002 15:06:45 +1100
From: Pat Casey <patcasey@iprimus.com.au>
Subject: Daniel's water woes
Daniel Chisholm asks about his water and measuring its pH,
1.The missing instructions are probably about how long to hold the strip
in the sample and how long to wait before reading it. Why not give the
shop a call and ask?
2. Reading the strip - hold it and the chart on a piece of white paper
or card and read in natural light.
3. pH, temp and ATC - We've just had some discussion about this on the
Oz Craftbrewing list. pH specifications are given for room temperature.
The pH of a hot sample will be about 0.3 to 0.4 less than at room temp.
Automatic Temperature Compensation compensates for variances in the
workings of the meter caused by different temperatures, it does not
compensate for pH changes in the sample caused by temp differences. So
if you take a reading of a sample at 50 deg C the ATC compensates for
the variance in the meter's workings caused by the 50 deg temp; the
reading you will get is the pH at 50 deg, not what it would be at some
standard temp. The sample must be cooled to room temp. I don't about
papers and temp but I presume they would be unaffected, but as specs are
given at room temp, again the sample must be cooled.
If you buy a pH meter get one with a resolution of 0.01 and accuracy of
+/-0.02. That way you can be sure about the accuracy of the second
digit, use the third as an indicator. Anyway pH can be changeable
depending on factors like the homogeneity of the sample, chemical
activity etc.
4. US$80 -100 for a water analysis seems a fair bit to fork out, in
Australian terms given a lousy exchange rate, AUS$160 -200, it's a bit
more than a day's work on average earnings, pre-tax. Will spending the
money give you the best return on improving your brewing? Remember the
analysis will only be accurate for when the water sample was taken, and
if the well is relatively shallow the water composition could vary with
the weather. With an analysis you'll get a nice set of figures, but
still you'll need to know what they mean and what to do with them.
What does the water taste like? Collect a sample of rain water and
compare it to what's in your well. Does it lather easily? Do your
ordinary kettles - tea, coffee etc - have any deposits? It sounds like
you live in a smaller community, so try asking around about local water
characteristics. Try a pet or aquarium shop - they may also be able to
measure the pH of a water sample, swimming pool shop, well digging
contractors, the local library might have some information, government
offices either geological or agricultural, neighbours, local farmers,
farmers' co-op. Plenty of people use water and have an interest in what
it contains geology or agriculture, neighbours. You should be able to
get enough information to give you something to work on, if it doesn't
give you the results you want then get the analysis done.
5. High terminal gravities - mash temp, accuracy of your thermometer?
Pat,
living at Lawson (pop 2,500, altitude 732 metres) in the Blue Mountains
100km west of Sydney with water softer than Pilsen
------------------------------
End of HOMEBREW Digest #3892, 03/18/02
*************************************
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