HOMEBREW Digest #94 Mon 06 March 1989

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		Rob Gardner, Digest Coordinator

  Wyeast #1098 (Pete Soper)
  boring mashing details (Pete Soper)

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---------------------------------------------------------------------- Date: Sun, 5 Mar 89 17:39:52 PST From: ephram at violet.berkeley.edu I have heard refrence to a "roller" type of grain crusher. I assume that this is in fact 2 steel cylinders set next to each other (like the hot dog cookers at the game). The rollers have some adjustment for size of gap between them and they rotate "towards each other" to form a flow through the gap between the rollers. My question is 1) Do I want to build such a grinder (crusher) or should I just buy a corona grain mill? 2) supposing that I decided to create one of these milling machines what are the specs? in specific, What gap range should I allow for between the rollers? 3) What materials should the rollers be made out of? 4) What speed(s) should I allow the rollers to rotate at? 5) What diamater roller should I use? 6) What day is today? 7) Am I on the right network? 8) Do I really want to undertake this project? 9) Who am us anyway? Inquiring minds want to know! We must prevent those commies from compromising the integrity of our precious bodily fluids. -Gen. Jack D. Ripper Ephram Cohen ephram at violet.berkeley.edu 466 44th St. #1 3210 Tolman Hall Oakland, CA 94609 Berkeley, CA 94720 Return to table of contents
Date: Sun, 5 Mar 89 21:12:08 est From: Pete Soper <soper at maxzilla.encore.com> Subject: Wyeast #1098 The ale I recently made with the new Wyeast type 1098 ("Whitbread") came out very estery. At bottling time there was a very strong smell of apple and banana. I've experienced a touch of estery aroma at bottling before. This was VERY much stronger and there was even a fruity flavor in the beer. After two weeks the aroma is less pronounced but still quite noticeable. The fruity flavor is gone. In other words, the serious defects have subsided 8^) Boring details: Fermentation at 61 degrees for the first 3 days and 65 degrees for the last 2. Original gravity 1.051, terminal gravity 1.019. Packet dated Dec 16 '88, swelled fully in 24 hours at 61 degrees. Three quarters of packet pitched into 1 pint starter. Starter kept at 61 degrees for 3 days before pitching to wort. The one thing unusual about this batch was that the sugar rest was 156 degrees for 30 minutes. This had two obvious effects. The terminal gravity was high, as expected, and there was very little hot and cold break, despite an 80 minute, vigorous boil. I have the remaining 1/4 packet and am considering using it in one more batch. The sugar rest temp will obviously be lower but I'm also considering doing the fermentation at 68-70 degrees too. --Pete Soper Return to table of contents
Date: Sun, 5 Mar 89 21:42:07 est From: Pete Soper <soper at maxzilla.encore.com> Subject: boring mashing details I've made four batches of beer with Briess 6 row pale malt now and played with mash temperatures to measure the effect on final gravity. Here is what I got: 1. 150-148 degrees, 2 hours --> 1.048 / 1.006 #2007 Wyeast 2. 156-156 degrees, 1/2 hour --> 1.051 / 1.019 #1098 Wyeast 3. 152-151 degrees, 1 hour --> 1.049 / 1.012 Doric Ale Yeast (dried) 4. 152-151 degrees, 1 hour --> 1.045 / 1.010 #2007 Wyeast First temp, starting, next after end of sugar rest in a highly insulated mash tun. Acid rest was 15 minutes at 115 degrees and protein rest was 30 minutes at 124 degrees in each case. Transition from protein to sugar rest took 2-3 minutes. Hot water infusion was used for everything except 168 degree mash off, which was done on the stove top in an average of 15 minutes. Several weeks ago I asked for tips for calibrating my thermometers to be accurate at mashing temps. I got nothing from you gentlepersons on this but borrowed a copy of Miller's new book which suggests use of a fever thermometer to very accurately indicate temps around 100 degrees (using a water bath). This worked well and I now use grease pencil marks on my thermometers like "+2" and "+0" to indicate what I have to add to a reading for correction. Pete Soper, Encore Computer Corp, 901 Kildaire Farm Rd., bldg D Cary, North Carolina 27511 USA phone 1 919 481 3730 arpa: soper at encore.com ( uucp: {talcott,linus,bu-cs,bellcore,decvax,necntc}!encore!soper Return to table of contents
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