HOMEBREW Digest #1649 Sat 04 February 1995

Digest #1648 Digest #1650

		Rob Gardner, Digest Janitor

  Re: Dishwasher sanitation (Bill Vaughan)
  Sour mashing procedures (Bill Vaughan)
  steam generators and phils phalse bottom ("Charles S. Jackson")
  AHA pulls out of BJCP (Louis K. Bonham)
  Iodophors ("Lee Bussy")
  RE: Fermenting first homebrew/Chloramine Removal (usfmchql)
  Bottling a lager... (Robert_Ser)
  Vail Co. (djfitzg)
  Re: Phila shops. (David Arnold)
  Plastic labels (Mark A. Stevens)
  More isinglass (Jim Busch)
  Way to go, Al ("William F. Cook")
  Archive of Beer Recipes? (Franklin Fuller)
  Re: Flames (real ones) / bottles breaking ("Christopher V. Sack")
  Mead questions (map)
  Re: r.e. Iodine Test Strips - Where? (Dion Hollenbeck)
  Barley Gelatinization (Randy M. Davis)
  Roller mill speed (Jack Schmidling)
  Water Analysis ("jim robinson")
  Siebel Operations course (Kelly Jones)
  Re: Ultraviolet light (Spencer.W.Thomas)
  Breaking bottles while capping ("Dutcher, Pier")
  Fort Meyers (Matt_K)
  Decoction (Steve Robinson)
  Counterflow Wortchiller questions (Chris Barnhart)
  AHA and the BJCP (Shawn Steele)
  RE: Iodine Test Papers (Arthur McGregor 614-0205)
  Gravity? (Douglas R. Jones)

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---------------------------------------------------------------------- Date: Wed, 1 Feb 1995 20:42:38 -0800 From: bill at oilsystems.com (Bill Vaughan) Subject: Re: Dishwasher sanitation Jonas writes: >I recently spoke to my homebrew supplier about cleaning bottles in a >dishwasher. He claimed that there was some soap that was ideal for that >kind of thing. I was under the impression that soap residue will be left >in the bottles. Can someone tell me the best conditions for using a >dishwasher to clean/sanitize bottles? I use my dishwasher to sanitize, but I clean the old-fashioned way, in a sink with lots of TSP. Procedure: 1. Clean all the food guck out of the dishwasher. 2. Run it once, empty, with no soap or rinse agents, to get rid of any leftover soap crud. 3. Set it on "heat dry," NOT "air dry." If your dishwasher won't do this, then you can't use it to sanitize bottles. But that's OK, you probably needed to clean it out anyway. 4. Wash the bottles by hand and rinse _all_ the TSP solution out of them. 5. Put them in the dishwasher -- no soap, no rinse agent, just water -- and run it. You don't need to use a heavy-duty wash cycle, a short wash will do as long as it has a full dry cycle. I do it this way because I don't trust the dishwasher to do a good job cleaning, or even rinsing, inside a long-neck. So far (4 years) I have not had a bad batch of beer that I could attribute to lack of bottle sanitation. (Yeast culture went south on me once, but it affected every bottle uniformly. Note that you can tell bottle-sanitation problems from other sources of nasties because with bottle-sanitation problems, there will be some bad bottles and some good ones.) As always, YMMV. BTW, I keg most of my beer these days. Eliminates the bottle problem completely. Of course, it raises the issue of how to sanitize your kegs... For which I use iodophor. I always rinse with boiling water, twice or three times if necessary, until I can't smell iodine in the keg anymore. I figure if I can still smell it, it will get into the beer. Two guiding principles here: -- Boiling water is good for everything, and -- Trust your nose. - ------------------------------------------------------------------------ | Bill Vaughan Software Engineer | | bill at oilsystems.com Oil Systems, Inc. | | (510) 297-5834 San Leandro, CA | |----------------------------------------------------------------------| | "Things should be as simple as possible, but no simpler" --Einstein | | "Simple is as simple does" --F. Gump | - ------------------------------------------------------------------------ Return to table of contents
Date: Wed, 1 Feb 1995 20:44:04 -0800 From: bill at oilsystems.com (Bill Vaughan) Subject: Sour mashing procedures Here's the sour mashing procedure I use. If you're doing a part-mash, part-extract recipe, this applies to your whole mash. If all-grain, you should probably only do this with part of your mash unless you like really sour beer. Mash as usual. Do NOT try to sour the mash before mashing -- it will get sour but will not convert. Amylase seems not to work at low pH. Take the mash to 170F for mash-out. At this point it contains no lactobacillus, so we will have to introduce some. There are four obvious sources: yogurt, sourdough, and "wild" lacto from grain hulls or the air. You need to cool the mash to the correct temperature for your lacto source. a) Yogurt: I use commercial packaged yogurt culture, from your local health food store. I suppose you could use grocery-store yogurt, but I've never tried it. Cool the mash to 90 degF, sprinkle the culture on the surface of the mash and mix it in. b) Sourdough: Use a commercial packaged sourdough starter, but don't just sprinkle it on your mash -- it will take too long. Instead, a week or so early (about when you do your yeast starter -- you DO do a yeast starter, don't you?) make a 1-pound mash of plain pale malt and start the sourdough starter in that. By mashing day it should be nice and stinky. Stir the whole mess into your mash. Starting and fermentation temp is about 105 degF. c) Wild lacto, from grain hulls: This is the traditional method. Just stir a quarter pound of grain, right from the sack, into your mash. I don't know the traditional temp, but I suspect 90-100 degF will work. d) Wild lacto, from the air. Cool your mash to about 90 degF, take it outside, and leave it open to the air for about twenty minutes. Shoo away the birds. In principle, this can give you a particularly local lactobacillus strain. I don't do it -- I figure my local strain is just _lactobacillus sanfrancisco_ anyhow. In all cases, keep the mash at your fermentation temp until it is ready. That will take one to two days for yogurt culture, maybe three days for sourdough. The only time I tried wild lacto, it was like lightning -- five or six hours. When the stuff is done, it will look and smell spoiled. There is nothing uglier than a lactic fermentation, and your marriage may be in jeopardy from the stench. The mash will look soupy, with husks floating on top and a lot of bubbles. If you can get it past your nose, you will find that the liquid tastes good. Sour, but good. I suppose you can let the mash ferment to completion, but I don't. It would be terribly sour. I go for my target pH, and then raise the mash back to 170 degF for sparging. Before re-heating your mash, you should pull some out -- say a half pound to a pound -- and keep it. That way, if you like your sourmash beer, you have a ce ready-made for your next batch. It will keep for a surprisingly long time in the refrigerator, with a lid on it. Feed it every month or so. You can _even_ make sourdough bread out of it. - ------------------------------------------------------------------------ | Bill Vaughan Software Engineer | | bill at oilsystems.com Oil Systems, Inc. | | (510) 297-5834 San Leandro, CA | |----------------------------------------------------------------------| | "Things should be as simple as possible, but no simpler" --Einstein | | "Simple is as simple does" --F. Gump | - ------------------------------------------------------------------------ Return to table of contents
Date: Wed, 1 Feb 95 22:56:31 CST From: "Charles S. Jackson" <sjackson at ftmcclln-amedd.army.mil> Subject: steam generators and phils phalse bottom Mike Brannigan's query on steam caused me some concern. I thought I had found the answer to my problem of raiseing temperatures in my beautiful Gott tower-of-power mash tun but then realized that I may have a problem trying to pump steam in. I use the phalse bottom (TM) and it seems to me that I will need to use a copper manifold. I can't envision having a manifold AND a phalse bottom in the same tun, but then I'm orthopaedics so I'm not very smart. Do I need to hang up my beloved (and expensive) phalse bottom to use steam injection? Steve - --------------------------------------------------------------------------- Brewing beer is far more exciting when it is both a hobby AND a felony! The Alabama Outlaw Return to table of contents
Date: Thu, 02 Feb 1995 01:23:45 From: lkbonham at beerlaw.win.net (Louis K. Bonham) Subject: AHA pulls out of BJCP The following is a press release From Patrick N. Baker, who is one of the Home Beer and Wine Trade Association (HBWTA)'s co-directors of the Beer Judge Certification Program (BJCP): ================================================================== *AHA Announcement of cancellation of their sponsorship of the BJCP* The AHA has announced that they are cancelling the June 1989 agreement between Scott Birdwell, former president of the HWBTA and Charlie Papazian, then President of the AHA, which inaugurated the Beer Judge Certification Program. Desmond Lundy, current HWBTA President, will make an official response upon his return from vacation. As HBWTA Co-Director of the BJCP, I am making an interim statement on behalf of the HBWTA. It is the right of either sponsoring party to resolve to go no further with the BJCP at any time. The decision of the AHA to withdraw support must be seen as regrettable, particularly given the obvious desirability of keeping a program such as the BJCP independent of any single sponsoring entity, thereby preserving its integrity. Such a program under single sponsorship is at risk of becoming a propaganda machine, or worse, a marketing tool. It has long been the position of the HWBTA that we would like to see the BJCP function as an independent entity, free from control of any organization, including our own. We continue to support the development of an independent BJCP. We urge that the involvement of the AHA in the remaining short time of the joint sponsorship of the BJCP to be constructive, not obstructive. We wish the AHA well luck in developing a judge accreditation program that is both respected and cost effective. Under the terms of the sponsoring agreement, AHA involvement in the BJCP will cease on April 18, 1995. We urge brewers and judges to continue their support of the BJCP. Both the HWBTA and BJCP are working to achieve judge representation and judge control of the Beer Judge Certification Porgram. Patrick N. Baker BJCP Co-Director ================================================================= In addition to this press release, I have learned that the AHA has notified the HWBTA that not only is the AHA quitting the BJCP (in favor of starting and running a judge program that is 100% AHA controlled [read: by Charlie P. and his designees], but the AHA also intends to insist that the BJCP cease any use of the BJCP name. While the AHA may be within its legal rights to do so, this smacks of the type of tactics employed by that other paragon of fairness and truth, Jim Koch [TM]. Having watched the AHA's antics over the last few years, this ought to be the last straw. IMHO, this is a shameless power play by the AHA bureaucracy -- those same folks that bring you that "AHA product catalog of the month" known as Zymurgy. Whn somebody finally offerred an alternative to Zymurgy, the result was Brewing Techniques -- a product vastly superior to what was then available. It's time for a similar, democratic alternative to the AHA to emerge, possibly along the lines of the old Homebrewers's Alliance of brew clubs. Return to table of contents
Date: Thu, 2 Feb 1995 06:33:49 +0000 From: "Lee Bussy" <leeb at southwind.net> Subject: Iodophors I saw two more posts about Iodine based sanitizers today. Okay, I've had enough. I use an Iodine based sanitizer. It works. It does not attack SS (think about all the SS in resteraunts). I do not rinse and make good beers (come look at my ribbon collection). It does not loose its effectiveness in it's storage container. It does sanitize (albeit to a lesser degree) as long as it's still orange. Where do I get my info? Test results performed by third party firms for Ecolab, Trade literature and field people who use it on a daily basis. There. Enough already. If you want to belive some minimum wage earner answering a phone somewhere about iodine based sanitizers... great. Maybe you ought to call Bud and tell them not to use it. ================================== Rich Lenihan asks about boiling temps and food grade tubing: Rich, I use the same vinyl that everyone else does for running my wort out of the kettle and into my counterflow chiller. It does get very soft but still intact and secure. Many batches done this way. What specifically were you going to do with it? ================================== - -- -Lee Bussy | The 4 Basic Foodgroups.... | leeb at southwind.net | Salt, Fat, Beer & Women! | Wichita, Kansas | http://www.southwind.net/~leeb | Return to table of contents
Date: Thu, 02 Feb 1995 08:22:59 EST From: usfmchql at ibmmail.com Subject: RE: Fermenting first homebrew/Chloramine Removal In HBD #1647: -=> Joseph R Tristano asks about (apparent) lack of fermentation... Try a hydrometer check. Snap-top fermentation buckets are notorious for letting CO2 leak out of the lid/bucket interface. If you followed typical (prohibition beer) instructions on a hop extract can, you have more than enough fermentables. This is the only thing that comes to mind due to the brevity of your post. -=> Joseph R Tristano also writes that he fills his airlock with a B-Brite solution. It is good to fill the airlock with something incapable of infection; however, might I recommend that next time you try vodka or ever-clear (both are flavorless grain alcohols)? Why? You may notice that when you remove your fermentor from that 80F bath to a cooler temperature that the airlock fill moves toward the beer side (assuming your lid isn't leaking...) If the temp differentials are great enough, some of that B-Brite may be drawn into your brew. Also, when you move that plastic bucket, the sides may collapse slightly and expel air through the lock. When you set it down again, it will return to its original shape - again potentially drawing that B-Brite into your beer. If vodka or ever-clear is drawn in, they add no chemicals that wouldn't end up there naturally. I believe B-Brite solutions lose their efficacy over time as well. Once again, just my (humble) opinion... -=> Dean A. Pulsifier asks about removing chloramine from his tap water... I believe filtration through activated charcoal will remove it (not an expert). -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- "So many beers; so little time!" - beer-o-phile's lament -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Pat Babcock President, Chief Taste-Tester, and Consumer Numero Uno Drinkur Purdee pico Brewery Return to table of contents
Date: Thu, 2 Feb 95 08:26:32 est From: Robert_Ser at ceo.sts-systems.ca Subject: Bottling a lager... CEO file contents: Dear fellow Home Brewers... I have a question regarding the bottling of a lager. I brewed a batch of pilsner on December 30th (OG: 1045) and used Wyeast's Pilsen Lager yeast (#2007). The primary fermentation was done at 55F for 7 days, then racked to secondary and moved to a cold room (42-45F) where it has been sitting for four weeks. It was very clear and showed no visible signs of fermentation. I was getting ready to bottle it on Monday night, so I moved the carboy onto a work table and started preparing my bottles. After a few minutes, I happened to noticed that the airlock was bubbling again (about one bubble every 5 seconds). Worried about incomplete fermentation (read: exploding bottles), I placed the carboy back in cold storage to let it ferment some more. I checked it yesterday (two days later), and the airlock was once again silent. I gave the carboy a slight swirl, and noticed airlock activity again.... I have not checked the SG (something about worrying about infections stops me), but I get the feeling that the fermentation is complete. So please tell me, what is happening? Is this simply a case of releasing dissolved CO2 when I shake it (like splashing around a glass of Coke after it goes flat)? Can I bottle it, or must I really take the SG, and check again in a few weeks to make sure the fermentation is complete? While I'm on the subject of bottling lagers, here is a related question: should I keep the bottles at a warmer temp (say 55F, or even warmer) for a week after bottling in order to kick off the fermentation, or should I keep them cold (45F)? Also, is there any need to re-introduce some yeast at bottling time, or is there enough dormant yeast in suspension in the beer as it is? Finally, is the standard 3/4 dextrose good for a pilsner, or should that be slightly increased? Any advice/answer would be more than welcome... And now, a public 'Thank You' to Matt K. (of the kitchen yeast painting, foam city kegging and brewba diving 'fame') who kindly introduced me to all-grain brewing last week. I was surprised to see how easy, worry free and *fun* this was. We used a single step infusion mash, and had absolutely no problems (except for one minor boil-over which kept me scrubbing the stove till midnight or so)... I am definitely considering the conversion to all-grain soon, and encourage all extract brewers to give it a try (preferable with a knowledgeable friend). Thanks again, Matt... TIA, Rob in Montreal robert_ser at ceo.sts_systems.ca Return to table of contents
Date: Thu, 2 Feb 95 08:38:31 EST From: djfitzg at VNET.IBM.COM Subject: Vail Co. greetings colorado, a friend of mine is planning a trip out to Vail, and would like your help. He is interested in any of the finer micro bre establishments out your way. please respond via e-mail to djfitzg at vnet.ibm.com as always thanks, dan fitzgerald. Return to table of contents
Date: Thu, 02 Feb 95 08:55:38 -0500 From: David Arnold <davida at syrinx.umd.edu> Subject: Re: Phila shops. folsom at ix.netcom.com (Alan Folsom) wrote: >There are several shops in the city, "Home Sweet Homebrew" is one I've >heard about. For those of us who don't go into the city limits very >often, I recommend Keystone Homebrew in Montgomeryville. Their number >is 641-4677, they do a lot of business so stock turns over fairly >quickly, have good prices, and nice people. Usual disclaimer, I don't >work for them, etc., although they do get a lot of my money. Yes, I've been to this one too. It's nestled in a stall in the Montgomery- ville Farmers Market; not exactly where you'd look for a homebrew shop, but why not? I wasn't looking seriously, but they did seem to have a decent supply of fixins They had a complete kit to turn a fridge into a keg fridge for $200, with everything but the drill bit and keg. How is this for a price on average? I'm not really interested in the rock-bottom mail-order price, as I've been burned this way before. Of course, I am swayable by intelligent arguments! :-) David Arnold (301)405-7636 Inet: davida at syrinx.umd.edu UUCP: uunet!syrinx.umd.edu!davida University of Maryland NeXTmail: davida at anagram.umd.edu College Park, MD 20742 URL: http://syrinx.umd.edu/~davida/ Return to table of contents
Date: Thu, 2 Feb 1995 09:11:52 -0500 From: stevens at stsci.edu (Mark A. Stevens) Subject: Plastic labels In HBD 1647, Steven Lichtenberg (steve at Pentagon-EMH6.army.mil) recommended bottles from Blue Ridge beers (Frederick Brewing) because they had plastic labels that were easy to remove. I've been using the Blue Ridge bottles quite a bit lately, but I've found that while, yes, the labels are VERY easy to remove, they often leave a sticky residue on the bottle that is very difficult to remove. I let the last batch of bottles soak in a chlorine bleach solution for an hour or so, then ran them through the dishwasher. A few of the bottles came out perfectly clean, but quite a few had a gummy sticky mess on the side. After I finish drinking up what I've got, I'll let it soak for a week or two in a tub of chlorine solution and see if that helps. Cheers! - ---Mark Stevens stevens at stsci.edu Return to table of contents
Date: Thu, 2 Feb 1995 09:47:58 -0500 (EST) From: Jim Busch <busch at eosdev2.gsfc.nasa.gov> Subject: More isinglass Capt Kirk asks: <The question is: can one do both of these and expect <it all to work? Specifically, does the isinglass precipitate <the yeast as well as the proteins, and if so, is there any <reasonable way to clarify with isinglass and yet not <have to force carbonate? Add the priming fermentables and the isinglass at kegging time. The yeast will ferment and the isinglass will drop the yeast. Be sure to cut the dip tube short or you will have a lot of isinglass in your glass. Isinglass is meant to be used in this fashion. If you want to force carb, use the isinglass in the fermenter, then force prime the keg. Dennis suggests: <4) Pitch with 2 quarts starter *directly into the boiling keg*. Leave lid in place. Ferment on *all* of the hot trub??! Thats a radical idea! Check out Ron Barchet's article on hot trub in an early 94 issue of Brewing Techniques. Seriously, you would be much better served if you had a second 1/2 BBl keg that is sanitized and ready to take the chilled wort. By using an immersion chiller, you already have all the hot and cold trub in the kettle, and it can be quickly separated from the bright wort. No waiting required, just one more transfer to the fermenter. BTW, I think you are asking for stability problems in a beer fermented on hot and cold trub. - -- Jim Busch busch at mews.gsfc.nasa.gov "DE HOPPEDUIVEL DRINKT MET ZWIER 'T GEZONDE BLOND HOPPEBIER!" Return to table of contents
Date: 02 Feb 95 09:58:14 EST From: "William F. Cook" <71533.2750 at compuserve.com> Subject: Way to go, Al In HB1647, Algis writes: >Mark Garetz knows far less about brewing than he thinks he does...[snip]... >To call Mark Garetz's work with hops "research" is a grave mistake. >It may sound as if I have a personal vendetta against Mark and perhaps >I do. Way to go, Al. Up until now, this was an excellent discussion of hop utilization. I'm sure it will deteriorate into worthlessness immediately. I take it that, whatever professional organizations you may belong to, you aren't invited to be a discusser of technical papers very often. Bill Cook Return to table of contents
Date: Thu, 2 Feb 1995 07:54:25 -0800 From: dfuller at ix.netcom.com (Franklin Fuller) Subject: Archive of Beer Recipes? Does anyone out there know of locations of beer recipes on the Net? I am still an extract brewer and am looking particularly for extract recipes...although I hope to be brewing all grain sometime soon! :fdf: Return to table of contents
Date: Thu, 2 Feb 1995 11:02:07 -0500 (EST) From: "Christopher V. Sack" <cvsack at mailbox.syr.edu> Subject: Re: Flames (real ones) / bottles breaking On Tue, Jan. 31, Ron Dwelle asked about Charlie P's method of pouring boiling wort into empty beer bottles in preparation for yeast propogation. Ron experienced two "breakers" and three "crackers". This is not unexpected because the bottles are neither tempered nor heat resistant glass such as Pyrex (tm) or Kimex (tm). If the bottles are heated before filling (I personally use oven sanitation), then pouring hot liquid into the hot bottle and letting the entire bottle cool down slowly will result in no breakage. I have used this very method for bottling a batch of hot tea. Two cases of bottled iced tea and no breakage. As for flaming the neck of the bottle. If the bottle was just sanitized, flaming is not necessary, but it is still a good idea for yeast propogation purposes. The contact time of the flame is under a second, but it is important to flame all parts of the neck that may contact the sterile wort. Flaming is very important just before pouring, because the lip of the bottle has been in contact with the unsanitized air for ??? days/months. I personally use a butane torch set on a small flame for two reasons. First of all, the flame is much hotter than a lighter so that contact time can be much shorter. Secondly, the torch will stand up by itself. This frees up both of my hands. One hand for the bottle, the other for the cap. Chris Return to table of contents
Date: Thu, 2 Feb 95 10:59:27 EST From: map at summit.novell.com Subject: Mead questions I have several questions about mead that I hope someone who is more experienced can answer. I started my first trial batch of mead back in late Sept 94. I used 4lb generic honey to 1 gallon water. Boiled honey with water (30 mins) and then added tannin/tea, acetic acid/lemon juice, yeast nutient and dry champagne yeast when cooled. Starting SG 1.120. Fermentation ceased after 15 weeks (FG 1.050) and was still cloudy. I didn't like this FG so I added more yeast nutient and a little more dry champagne yeast - What I got wasn't any more fermentation but the added yeast mixture did clear the must and also dumped a load of sediment in the secondary. My questions are: 1) Why did the fermentation stop? tried to keep temp. atleast 60F - I know it takes time for mead to ferment, but I got no further activity after 15 weeks. I hear stories about mead going down to FG 0.998. 2) Was it a smart move to add more yeast? - I guess not - but it did clear. What else can I do to get it going again if it happens next time? The resulting mead is drinkable but a little to sweet for me (1.050), but the strength is ok. It's in the sweet sherry range as far as I can tell. The only other question I have - Is it possible to darken the resulting mead? The light yellow color is a little off-putting when I "pass" it around to guests :-). Can I darken it in future with something while I'm preparing the must. Do different types of honey impart different colors to the resulting mead? Would a rasberry melomel have color and/or be darker? Thanks. Mike -- map at summit.novell.com Return to table of contents
Date: Thu, 2 Feb 95 08:14:46 PST From: hollen at megatek.com (Dion Hollenbeck) Subject: Re: r.e. Iodine Test Strips - Where? >>>>> "Stan" == Stan Fisher <stanf at indirect.com> writes: >> of the solution. Bet most of you, too, were under the false >> assumption that if it was still orange, it would sanitize, well I have >> learned that is false information and I want to find out what is >> accurate information. Stan> Woah!!! Does anyone have an idea of the shelf life of a jug of Stan> Iodophor? I was talking about diluted Iodophor. I believe that there is no problem with the product bottle when kept closed, but this is not based on any facts. If there was a shelf life, wouldn't the manufacturer have some sort of expiration date on it? dion - -- Dion Hollenbeck (619)675-4000x2814 Email: hollen at megatek.com Staff Software Engineer Megatek Corporation, San Diego, California Return to table of contents
Date: Thu, 2 Feb 95 9:51:50 MST From: Randy M. Davis <rmdavis at mocan.mobil.com> Subject: Barley Gelatinization On the subject of rests at temperatures below the gelatinization temp. of barley. The other day Jim Larsen mentioned that malted grains do not require gelatinization. In support of his statement I offer a quote from Malting and Brewing Science that I thinks explains the issue fairly well. This is from volume 1 page 282. "It has long been known that extended mashing at 55 C.(130F.) eventually produces about 90% of the possible extract, although this is well below the recognized gelatinization temperature of barley starch, and even at lower temperature extensive starch degradation occurs. The enzymes are therefore slowly able to degrade malt starch granules and not merely a paste or gelatinized starch as is present in precooked adjuncts." So, let's hear it for the enzymes. The next section describes some of the effects of mash temperature on protein degredation. By the way, I am currently reading Malting and Brewing Science for the second time. I find that it satisfies the burning desire I have for more and more technical info related to brewing. I recommend it highly to anyone who suffers from the same affliction. - -- +-------------------------------------------------------------------------+ | Randy M. Davis rmdavis at mocan.mobil.com Calgary Canada (403)260-4184 | +-------------------------------------------------------------------------+ Return to table of contents
Date: Thu, 2 Feb 95 10:56 CST From: arf at genesis.mcs.com (Jack Schmidling) Subject: Roller mill speed <From: "Manning Martin MP" >My Glatt mill is now powered by a 30 in-lb gear motor that turns at 156 RPM. Power transfer from the gear motor PTO to the mill is through a split coupling. A direct drive arrangement such as this is very compact, and avoids the hazard of a belt and pulleys. That's why I put in the engineering effort to try the approach. I was coupling with the gears used in the gear drive and it required on a small plastic to completely cover all moving parts. I conlcuded that the motor required to do the job was far to expensive to make a vialble product. >It will start from zero-speed with no hesitation, even if the hopper is full of malted barley or the slightly-more-taxing malted wheat. Not sure what is going on here but Yankee Brew News reported that the Glatt is harder to turn than the MM and should therefore require more torque. I don't know why this should be given the much small rollers and consequent lower throughput. > I have not tried un-malted wheat, but my ol' KitchenAid Flour mill is just made for that. If you don't want to destroy the gears, it's best you stick with the KA. > I also know of a Listermann Philmill which has been motorized using the same gear motor and direct drive. This is even harder to believe as I KNOW this one is harder to crank than the MM. Guess I would like the brand and model of that motor as it clearly is not performing like the ones that I bought. > The through-put of my Glatt depends somewhat on the gap setting, and is typically 1.2 to 1.5 pounds per minute. Interestingly, measurements taken at slow speeds, cranked by hand, would have predicted as much as 1.8 lb/min at 156 RPM, so there is a noticable reduction of through-put with increased cranking speed. That is a direct result of the efficiency of the texturing of the rollers. They obviously are feeding grain as fast as they can at the lower speed and increasing it just rolls them around in the mill. This situation existed to a lesser degree in the MM with the earlier linear groves on the rollers. The current design is far more efficient and the throughput rises linearly to about 400 RPM at which point, it starts falling off again. js Return to table of contents
Date: Thu, 02 Feb 95 09:23:22 pst From: "jim robinson" <jim_robinson at ccmailsmtp.ast.com> Subject: Water Analysis This message is to the gee-whiz propeller head programmers out there ( I say that with the greatest respect). I even remember seeing a post from a programmer who is looking for work. Weeeellll, if you can do what I'm proposing, you'll impress more than a few brewers. I'm sure that more than a few of you are getting tired of seeing the "now standard" graph for water analysis. The standard phrase at the end of the post is something like this "should I add _____?". Obviously the answer to their question depends on a number of variable, not the least of which is "what are you trying to brew?" OK, so heres the catch. Is it possible to come up with a program that the average Joe Brewer can "plug" in his local water numbers and come up with the proper adjustment to make a specific brew? I know that it would probably take a bunch of research, but the programming would probably be easy. Eh? I'm sure if someone did a beta version, the local beer experts would be happy to tweak it into reality. This would be the brewers equal to the pocket calculator. It doesn't matter to many brewer why something works, or what the theory behind it is, only that it works. With that said, are there any takers out there? I know what your going to say... but I only work for a computer company, I don't actually know anything about programming ;-) Jim Robinson P.S. My Coleman "Commercial" 10 gallon water cooler ($22.00)is now doing very successful 10 gallon batches. SO THERE GOTT!! Return to table of contents
Date: Thu, 2 Feb 1995 10:37:02 -0700 From: k-jones at ee.utah.edu (Kelly Jones) Subject: Siebel Operations course Has anyone out there attended the Siebel "Microbrewery and Pub Brewery Operations" course? Can you offer any input as to the course content, what you gained from the course, whether it was worth the money, etc.? (I have the Siebel catalog, I'm looking for feedback from actual course attendees.) Thanks, Kelly Return to table of contents
Date: Thu, 2 Feb 95 12:39:50 EST From: Spencer.W.Thomas at med.umich.edu Subject: Re: Ultraviolet light I found the following on "the web" yesterday. It seemed relevant to this discussion. >From http://hamjudo.com/hottub_notes.html (see also http://hamjudo.com/cgi-bin/hottub) What is the ozone generator? An ozone molecule is three oxygen atoms instead of the normal two. My dictionary (American Heritage Dictionary, Second College Edition) says that ozone is an unstable, powerfully bleaching, poisonous, oxidizing agent with a pungent irritating odor. I use ozone instead of chlorine or bromine to keep the water clear. Ozone breaks down into normal oxygen after a few minutes in the water. The ozone generator is a tube with an ultraviolet light. Air gets sucked through the ozone generator and is pulled into the water. When the UV light hits the air, it turns some of the oxygen into ozone. The ozone in the water kills any single celled creatures in the tub. It also has bleached my rubber ducky. Return to table of contents
Date: 02 Feb 95 09:43:55 PST From: "Dutcher, Pier" <PEDU at chevron.com> Subject: Breaking bottles while capping From: Dutcher, Pier -PEDU To: OPEN ADDRESSING SERVI-OPENADDR Subject: Breaking bottles while capping Date: 1995-02-02 09:31 Priority: - ------------------------------------------------------------------------------ After reading the thread about people breaking "cheap" bottles, I thought I'd enter the fray - I started using Miller Genuine Draft (yeah, right...) bottles several years ago because they were the only clear, recappable bottles that contained an affordable beer that I could kind of enjoy. I also broke several of those while recapping, along with other brands of thin bottles. My solution: stop using the neck-grip double-lever type capper (you could break a champaigne bottle with one of those if you tried hard enough) and switch to a single-lever capper. It was a bit more expensive (~$40, as I recall), but worth every cent. I've been unable to break ANYTHING with it, and I put plenty of force on the lever to assure a tight cap seal. Those of you who have used only a double-lever capper, try to borrow a single-lever one for your next bottling session. I doubt if you'll want to return it] Pier Dutcher (PEDU at CHEVRON.COM) Return to table of contents
Date: Thu, 2 Feb 95 12:53:40 est From: Matt_K at ceo.sts-systems.ca Subject: Fort Meyers Message: I will be heading to Fort Meyers in sunny Florida in the near future. Any advice re. good brewpubs will be greatly appreciated. Matt Montreal Return to table of contents
Date: Thu, 2 Feb 95 09:49:34 EST From: Steve Robinson <Steve.Robinson at analog.com> Subject: Decoction Tom Ausfeld writes: > Secondly: I keep hearing that bringing grains to higher than 170F, I > risk an increase leeching out tannins from the husks. I have done 6 > all-grain beers and I'm very happy with the results. I'm planning a > lager and would like to do it with a decoction mash. I have not > performed a decoction mash as of yet, but have been doing alot of reading. > My understanding is that you remove some of the mash (including grains) > and boil it. Am I missing something here or am I worrying to damn > much about tannins? Tannin extraction is a function of both temperature and pH. In your thick decoctions, the pH should be low enough as to minimize tannin extraction. The concern arises during sparging because, as you remove the sweet wort from the grain, the pH of the mash rises. Steve Robinson in North Andover, Mass. steve.robinson at analog.com Return to table of contents
Date: Thu, 2 Feb 95 14:06:49 EST From: Chris Barnhart <clbarnha at letterkenn-emh1.army.mil> Subject: Counterflow Wortchiller questions I currently use a "garden hose and tube" style wortchiller built from ideas in the chiller FAQ. To save space and bulk I would like to switch to the "coil in a PVC tube" style. Has anyone built this type of chiller? How does it compare in efficiency with the other style. Is it somewher between an immersion and the "garden hose" style? Would this style use more cooling water? I've seen several examples at store and in ads but don't know anyone who actually uses one. Chris Barnhart clbarnha at letterkenn-emh1.army.mil + Return to table of contents
Date: Thu, 2 Feb 1995 13:51:01 -0700 From: Shawn Steele <shawn at aob.org> Subject: AHA and the BJCP I have forwarded the following announcement from Karen Barela, president of the American Homebrewers Association. Before panicing, please pay attention to the following paragraph of this release: "We have long desired the BJCP to be educational, accessible, responsive and international in scope. Because of this philosophy, we have decided to develop a new beer evaluation program, one that represents the wide diversity of competitions and judging in this country and the international community." ANNOUNCEMENT FOLLOWS - -------------------- January 31, 1995 It is with regret that the American Homebrewers Association has found it necessary to cancel joint sponsorship of the Beer Judge Certification Program. The joint sponsorship of the program, formed in 1985 under an agreement with the Home Wine and Beer Trade Association will no longer be in effect as of April 19, 1995. We are not yet certain about the changes that will take place as we are still discussing the situation with HWBTA and Beer Judge Certification Committee (BJCC) representatives. Under the terms of the original agreement, either program sponsor can cancel the joint sponsorship with 90 days written notice to the other sponsor. I notified HWBTA President Desmond Lundy in writing on January 18, 1995 that the agreement has been canceled. We sincerely hope that the cancellation of the BJCP will go smoothly during this 90 day period. It is our intention to work carefully and conscientiously with the HWBTA and BJCC, both former sponsoring organizations, and BJCP judges. We regret that we were unable to resolve the differences in philosophy and style that have held back the current BJCP. The AHA is committed to making this transition a positive one. We have long desired the BJCP to be educational, accessible, responsive and international in scope. Because of this philosophy, we have decided to develop a new beer evaluation program, one that represents the wide diversity of competitions and judging in this country and the international community. Current BJCP judges will be welcome to participate in the new program with equivalent judging status. We also plan to form a new committee structure, elected from the existing pool of BJCP judges. Our goal is to build the best program possible. A formal announcement with details about the transition will be mailed to all judges at a later date. In the meantime, the program will continue unchanged through April 19, 1995. Sincerely, Karen Barela President, American Homebrewers Association Please direct all inquiries regarding this announcement to Karen Barela, AHA President, PO Box 1679, Boulder, CO 80306-1679, (303) 447-0816, FAX (303) 447-2825, E-mail: aha at aob.org Return to table of contents
Date: Thu, 02 Feb 1995 16:22:16 -0400 (EDT) From: Arthur McGregor 614-0205 <mcgregap at acq.osd.mil> Subject: RE: Iodine Test Papers You can buy iodine test papers from many homebrew stores and mail order. They are similar to pH test papers, and the color change depends on the strength of the iodine in p.p.m. (parts per million). The papers can be used to determine if your batch of iodine cleaning solution (1-2 oz in 5 gallons of water) is still strong enough to for sanitizing. The price is around $3-$4 for the vial of 100 test papers. A word of caution on the brands that are available - some brands have color changes that are so small that the papers are worthless. I bought one type through the mail (BLUE RIDGE iodine test papers) and they stink! The color change is a very small blue tint, and the only concentration that has a dark enough color to read is 50 ppm :>o) which is 4 times the strength needed. I recently went to a local homebrew store and bought a different brand of iodine test papers that IS VERY READABLE. It's labeled "Precision Iodine Test Papers," and is made by: Precision Laboratories, Cincinnati, Ohio 45215 (513)777-3034. The small bottle consists of 100 white strips, comes with a 3 grey scales that indicate 12.5 ppm/25 ppm/50 ppm. The difference in the grey to black scale are dark enough to determine if the iodine concentration is strong enough to sanitize :>). I can not verified whether the test strips are accurate, so will have to believe the folks at Precision Labs. I would recommend that if your homebrew store does not carry any iodine test papers, that they _not_ stock a brand that is hard to read (such as BLUE RIDGE). So ask questions before buying if by mail order. Standard disclaimer, just hoppy! I've found that a 5 gal batch at 12.5 ppm of iodine cleaning solution will last for about 2 weeks before it needs replacing. Hope this helps :) . BTW according to Thomas' Register the address for Precision Labs is: Precision Labs 8989-T Crescent Park Dr. West Chester, OH 45069 (513)777-3034 Good Brews! Art McGregor (mcgregap at acq.osd.mil) Lorton, Virginia Return to table of contents
Date: Thu, 02 Feb 1995 08:53:19 -0600 From: djones at iex.com (Douglas R. Jones) Subject: Gravity? I have been given the basic recipe for a commercial beer that I love. But the folks gave me the gravity in numbers I do not comprehend. I am assuming that they are in Plato (?). They are: O.G. 11.5 - 12 F.G. 2.5 - 3 Can anyone translate this for me? Also if the recipe calls for Belgian 2 Row is this equivalent to either Belgian Pilsner or Belgian Pale Malt> TIA, Doug - -------------------------------------------------- 'I am a traveler of | Douglas R. Jones both Time and Space' | IEX Corporation Led Zepplin | (214)301-1307 | djones at iex.com - -------------------------------------------------- Return to table of contents
End of HOMEBREW Digest #1649, 02/04/95