HOMEBREW Digest #5696 Thu 10 June 2010

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  Re: Berliner Weiss (Stephen Jorgensen)
  Brix/Plato conversion ("A.J deLange")
  Siebel Advanced Homebrewing Course ("Lemcke Keith")

* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * Beer is our obsession and we're late for therapy! * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * NOTE: With the economy as it is, the HBD is struggling to meet its meager operating expenses of approximately $3500 per year. If less than half of those currently directly subscribed to the HBD sent in a mere $5.00, the HBD would be able to easily meet its annual expenses, with room to spare for next year. Please consider it. Financial Projection As of 04 Jun 2010 Projected 2010 Budget $3305.65 Expended against projection $1066.11 Projected Excess/(Shortfall) ($940.36) As always, donors and donations are publicly acknowledged and accounted for on the HBD web page. Thank you Send articles for __publication_only__ to post@hbd.org If your e-mail account is being deleted, please unsubscribe first!! To SUBSCRIBE or UNSUBSCRIBE send an e-mail message with the word "subscribe" or "unsubscribe" to request@hbd.org FROM THE E-MAIL ACCOUNT YOU WISH TO HAVE SUBSCRIBED OR UNSUBSCRIBED!!!** IF YOU HAVE SPAM-PROOFED your e-mail address, you cannot subscribe to the digest as we cannot reach you. We will not correct your address for the automation - that's your job. HAVING TROUBLE posting, subscribing or unsusubscribing? See the HBD FAQ at http://hbd.org. LOOKING TO BUY OR SELL USED EQUIPMENT? Please do not post about it here. Go instead to http://homebrewfleamarket.com and post a free ad there. The HBD is a copyrighted document. The compilation is copyright HBD.ORG. Individual postings are copyright by their authors. ASK before reproducing and you'll rarely have trouble. Digest content cannot be reproduced by any means for sale or profit. More information is available by sending the word "info" to req@hbd.org or read the HBD FAQ at http://hbd.org. JANITORs on duty: Pat Babcock (pbabcock at hbd dot org), Jason Henning, and Spencer Thomas
---------------------------------------------------------------------- Date: Wed, 09 Jun 2010 21:16:04 -0500 From: Stephen Jorgensen <stephen at ultraemail.net> Subject: Re: Berliner Weiss I tried this once and it turned out fairly well, 50/50 wheat and pale malt with 1/4 oz Hallertau pellets in the mash at 150F 1 hour and mashed out at 170. Sparged through a counterflow chiller into fermenter. OG was 1.045 for 6 gallons. I fermented with a Lacto starter as previously described by the Wyeast method and Danstar dry german wheat yeast. Can't find my notes but I remember I didn't add the Lacto until high kraeusen to lessen the PH shock. Left it in the primary for two weeks at 65 - 70 F and racked it off for immediate bottling. I was very happy with the acid level but there was a noticeable DMS flavor which, with the acid, was a bit like green olives but certainly drinkable. I was attending Siebel at the time and had the opportunity to ask Michael Eder from Doemens about DMS in Berliner Weiss. I was told that in Germany they do not boil Berliner and they do mot mash out because the DMS precursors are not formed below 70C. The mash and the wort are never taken above saccharification temps at all. I did not ask but can safely assume that in order to get the Lacto into the beer there is a cold sour mash rather than a culture due to the Reinheitsgebot. Return to table of contents
Date: Thu, 10 Jun 2010 14:14:04 -0400 From: "A.J deLange" <ajdel at cox.net> Subject: Brix/Plato conversion As a consequence of researching the Brix question further I have discovered, after years of wondering, exactly what the relationship between Brix and Plato (as calculated by the ASBC polynomial) for a given specific gravity (20/20, apparent), S, is and it is Plato - Brix = (((-2.81615*S + 8.79724)*S - 9.1626)*S + 3.18213) A couple of examples (pmb(1) is the function given above) pmb(1) = 0.00062 pmb(1.04) = 0.00033503 pmb(1.08) = 8.47872e-05 Thus the differences are in the 4th and 5th decimal places in Plato (% w/w) units. As 1 P corresponds to 0.004 specific gravity units going in the other direction the differences between specific gravity calculated from Brix and Plato %w/w values would be 0.004*0.00062 = 00000248 and 0.000335*0.004 = 0.0000013 at the high end of the ASBC polynomial's range. These values were arrived at by fitting a 4th order polynomial to the data in Table 114 of NBS (now NIST) circular 440 which seems to stand as the authority to this day in the US at least. Return to table of contents
Date: Thu, 10 Jun 2010 16:58:51 -0400 From: "Lemcke Keith" <klemcke at siebelinstitute.com> Subject: Siebel Advanced Homebrewing Course Just a reminder that there is still time to register for the Siebel Institute Advanced Homebrewing Course (July 26 - 30, 2010) and qualify for the early registration discount. You have until June 26th to register for the course at the early registration price. As this course usually sells out, please don't wait to sign up. For more information on the Siebel Institute Advanced Homebrewing Course, download our complete course catalog at http://siebelinstitute.com/catalogs/pdfs/2010_wba_catalog.pdf . If you have questions regarding our course, contact us at info at siebelinstitute.com. Keith Lemcke Siebel Institute of Technology Return to table of contents
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