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- From: jdecarlo@mitre.org (John DeCarlo)
- Newsgroups: rec.crafts.brewing
- Subject: Re: Help with causes of astringency
- Message-ID: <jdecarlo.396.722532459@mitre.org>
- Date: 23 Nov 92 15:27:39 GMT
- References: <1992Nov20.144935.19211@brtph560.bnr.ca>
- Sender: news@linus.mitre.org (News Service)
- Organization: MITRE Corporation, McLean VA
- Lines: 42
- Nntp-Posting-Host: homebrew.mitre.org
-
- In article <1992Nov20.144935.19211@brtph560.bnr.ca>
- bcronk@bnr.ca (Bryan Cronk) writes:
-
- >Second, I tasted some at bottling time, and from everything I've read,
- >this beer has a definate astringency to it. According to Miller, this
- >is probably caused by:
- >
- >1) Letting Hops sit too long in hot wort. Well, I did let my finishing
- >hops sit in the boiler for about 10 minutes after I took it off the heat,
- >but Miller himself recommends 15 minutes, so I'm not sure that had anything
- >to do with it.
- >
- >2) High PH in sparge water. On the recommendation of my brew shop, I have
- >been using Lactic acid (17%) to adjust my sparge water. I thought that if
- >anything, my sparge PH was too LOW. Those darn PH papers are not really
- >precise, but I thought that I may have put too much lactic acid in. Is
- >this also a possible cause of astringency?
- >
- >Finally, compared to the Whitbred and Vierka yeasts I have used in the past,
- >the EDME didn't seem to clear as well in the secondary, but I went ahead
- >and bottled anyway since I was under time constraints. Could yeast in
- >suspension give the same type of taste characteristics as astringency?
-
- Well, there is always a problem with verbal descriptions of flavors. I'm
- certainly no expert, but have found people with various interpretations of
- astringency.
-
- I believe two other things may possibly have contributed:
-
- 1) Infection. Is this yeast from the same batch you used before? Anything
- else change in the process?
-
- 2) Oxidation. Any chance the beer oxidized during any racking operations
- after fermentation began?
-
- Plus, as someone already mentioned, you may just be getting a lot of
- bitterness from the hops. I have noticed an astringent type of bitterness
- from overly dry-hopped beers.
-
-
- John DeCarlo, MITRE Corporation, McLean, VA--My views are my own
- Fidonet: 1:109/131 Internet: jdecarlo@mitre.org
-