HomeRoast Digest


Topic: dry coffee (7 msgs / 164 lines)
1) From: Warren and Carolyn
Peter-
I have the misfortune of living in Arizona as well, and when I first 
moved here (from Hawaii!) I noticed that coffee never tasted as good as 
it did back home. The dryness is a very big factor, but my solution has 
been to buy greens in small quantities more frequently-I think I buy 
about once a month-and my coffee is still way better than anything I get 
out of the house.
I suppose using a humidifier might help, but I have never tried that.
Warren
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2) From: Michael Mccandless
I've recently started using propylene-glycol H2O mix to keep coffee around
70% RH.
I haven't had any luck finding the H2O to PG ratios that define upper-lower
operating limits for the solution.
Most of what I see appear to be cut-n-paste recommendations for 50-50 mix.
Some cigar store solution is 98+% H2O & cost $9.00 for 16 oz.
Major ripoff.
Any recommendations for reliable data sources?
Thanks,
McSparky
Any
On Wed, Feb 11, 2009 at 11:30 AM, Warren and Carolyn  wrote:
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3) From: Greg's Gmail Address
I wonder if unscented deodorant has the right ratio....  Seriously.  The
main ingredients are (usually) PG and H2O.  Anyone know if this would work?
Oh, here's a resource:http://books.google.com/books?idoUoiW8FpkC&pg273&lpg273&dq=ratio+deodorant+propylene+glycol&source=web&ots=yRE6kAO44T&sig0cVig8fwAwvhfMqfgLXl-pK0M&hl=en&ei=oGKTSYaLJpWksAOAqsisCw&sa=X&oi=book_result&resnum=9&ct=result80% PG
11% H2O
(and 8% gelatin stuff - hopefully not bovine derived).
Not that it would be much cheaper, but it sure would be easier to get.
On Wed, Feb 11, 2009 at 2:42 PM, Michael Mccandless
wrote:
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4) From: raymanowen
Why use propylene-glycol H2O mix? The PG adds nothing, it's a solute that
elevates the bp and lowers the freezing point of straight water. It's just
non- toxic antifreeze.
If you don't mind the yellow color, auto parts stores sell the 50:50 mix for
 $6 / gallon.
The water would evaporate, and concentrate the mixture. The yellow  and the
propylene glycol won't evaporate, so why even bother with >Any< PG? 100%
water works best for humidification.
If you have been told that a certain mixture gives a certain RH, some water
evaporates, you have a different mixture and the story changes... -ro
On Wed, Feb 11, 2009 at 3:42 PM, Michael Mccandless
wrote:
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-- 
"When the theme hits the bass, I dance the Jig!" - -Virgil Fox at the Mighty
Wichita (ex- NYC Paramount) WurliTzer- 1976
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5) From: Michael Mccandless
I have been experimenting with PG-H2O to control humidity in my greens.
Without PG, humidity will exceed 80%.
With the mix, it will stabilize @ 70%.
I'm curious about what % mix the solution will become ineffective on both
extremes.
I haven't seen "food grade" antifreeze. 
McSparky - the Curious
On Sat, Feb 14, 2009 at 9:35 PM,  wrote:
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6) From: peterz
Hi Mike,
AZ is a great place to dry coffee it seems. I am using a whole house 
humidifier, a free standing model, to humidify the room where I have my 
office and keep my coffee. Wish I had thought of it before. It is pretty 
easy to pick the humidity you want and hold it within 5% or so. Now I am 
not sure what to keep it at, but have been trying it at 50%. If anyone 
has a better idea please tell me. In the last week it has used more than 
5 gallons!
The beans I ordered from Tom will be in on Monday, but I will be in 
Phoenix all next week.
Charlotte is having neck surgery, to fix her spine. From the back on 
Monday, and from the front on Wednesday. This is a preparation so they 
can do the same on her lower spine in April.
So we are heading to Phoenix in a half hour or so. If anyone wants to 
meet for coffee sometime during the week, just email me. Be aware that 
my coffee lately has been horrible, even tried a bag of Peet's, and 
returned it, and I need to know where to get some great brew in Phoenix.
All advice and suggestions greatly appreciated.
PeterZ
Suffering a cold morning here in LHC, 38 F!!
Michael Mccandless wrote:
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7) From: Michael Mccandless
I'm in Chandler, AZ.
Search of the archives brings back recommendations of 70%.
I use florists foam to hold the solution.
When the H2O runs out the humidity will drop from 70% to <50% in a day.
You can usually catch me @ the Coffee Rush ~2:30 for a few minutes.
Let me know & I'll meet you there.
SE corner of Dobson & Ray.
Mike "McSparky"
480-221-6998
On Sun, Feb 15, 2009 at 10:53 AM, peterz  wrote:
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