HomeRoast Digest


Topic: Bodum Vacuum Brew Question (46 msgs / 1126 lines)
1) From: Kevin
I ran my first test run in the Bodum Vacuum brew tonight using only water
(no coffee).  I had a hard time getting a good seal between the stem and the
gasket.  Are there any tricks to getting a good seal?  Without the seal the
water will not rise into the top chamber.
Thanks.
-- 
Kevin

2) From: Aaron
Kevin I use the electric model so it might be a bit different but.
stem and gasket? hmm that's odd. mine the stem has the gasket on it and 
it shoves down into the bottom part.
anyways....
make sure everything is clean, no dust or shipping material 'parts' 
stuck in there.  no tape etc etc.
give it a firm press down but not too hard don't want to break anything.
sometimes a rubber seal needs a use or two to 'condition' it.
try running it a few times, if it still don't seal you might want to 
take a drop or two of olive oil or any cooking / food grade oil and very 
lightly make a super thin coat on the gasket and try it that way, it 
should seal then.
Aaron

3) From: Stephen Niezgoda
I never had a problem with a seal on mine. I always give a little twist as I
put the top bowl on.
Try putting a few inches of water in the bottom bowl, then put the top on
and pour in some water.  If the water drains into the bottom you know you
have a bad seal and can try some oil or maybe wetting the seal first.  It is
easier then repeatedly heating the thing up to check.
Steve
On 11/8/06, Kevin  wrote:
<Snip>

4) From: Kevin
thank you for the help.  I'll try both methods, olive oil on the rubber
gasket to help make a seal and pouring a litte water in the top chamber to
see if there is a seal...I'll have more time to play with it this weekend.
Thanks again.
-- 
Kevin

5) From: Bart Frazee
Are you using the alcohol burner and stand, or a regular stove? The
burner and stand provides a small point of flame right in the center
of the pot, directly below the stem. You can watch the bubbles go
right up the stem and out the top without building any pressure in the
bottom. If you hold it slightly off center so the bubbles do not go up
the stem it will work.
Then again, if you are using a regular stove....
Bart
On Wed, 8 Nov 2006 17:12:05 -0800, you wrote:
<Snip>
water
<Snip>
 the
<Snip>
the
<Snip>

6) From: Kevin
Bart,
I'm using a flat top electric stove w/a wire grid. I set the brewer up
w/water in the bottom and no coffee just to get a feel.  In order to get the
water to rise I need to apply downward pressure on the top chamber (to form
a good seal).  However, I didn't have much time to mess with it last night
and used room temp water to start with and brought it to a boil (SM
recommends using near boiling and the burner on low).  Tonight I'll put near
boiling water in the bottom and wet the rubber gasket.
-- 
Kevin

7) From: Branden Byers
I've never had trouble with the seal on my bodum santos. I find that
when I pour near boiling water into the bottom chamber, that the steam
that rises wets the lip that the upper portion seals to. I just give
it a little twist and it start rising almost instantaneously. I had to
adjust my twist, because if I turned more than an 1/8" that I had
troubles releasing the seal after brewing.
-Branden
On 11/9/06, Kevin  wrote:
<Snip>

8) From: Barry Luterman
This is a multi-part message in MIME format.
It's the gasket. Alternatively soak it in hot and then cold water a few =
times and then retry using just water in the vac-pot. You should see no =
air bubbles escaping from the gasket glass interface.

9) From: Peter Zulkowski
We have a flat top electric stove, and quite frankly I was afraid and 
amazed when Ben stopped by one day and showed me a thing or two about 
roasting coffee, and brewing coffee.
He took my brand new Bodum and set it right on the surface of the flat 
top range...
Geesh.. I would not even go close to it...
Stood across the kitchen while it heated...
However, it performed admirably.
Even though the burner turned red under the pot, everything functioned 
great !
No cracks,
no explosion,
no breakage.
The coffee was wonderful :)
PeterZ
Kevin wrote:
<Snip>

10) From: Kevin
Peter,
Yeah, the Bodum Vacuum brewer works great (don't know about the taste yet).
I tested it last night after soaking the gasket in cold/hot water
(alternating) and filled it with some old store-bought pre-ground coffee and
it worked like a charm.  It's entertaining to watch the brew process, like a
Mr. Wizzard or Bill Neigh the Science Guy project...
-- 
Kevin
"I got a fever and the only prescription... is more cowbell"
  -The legendary Bruce Dickinsonhttp://www.funnyhub.com/videos/pages/snl-more-cowbell.html

11) From: Kevin
For those interested:
Okay, I brewed my first batch of coffee in the Bodum Santos Vacuum brewer
with leftover whole bean Gevalia b/c I haven't had time roast yet this week
(that's how it is with a four-week old).  Though the coffee wasn't fresh,
the Bodum brewed a VERY clean cup.  My typical morning coffee is brewed via
a FP, so the vacuum brew was a nice change of pace.  The coffee was smoother
and not as bold as when brewed with a FP.  For my taste, I prefer the FP
during the week when I want a strong, bold coffee to start the work day but
I really enjoyed the Vacuum brewer this Saturday morning.  I plan to use it
on the weekends when I have more time to sip and enjoy the cup.  Tomorrow
I'll prepare a side by comparison of the two brew methods with homeroast (if
I get a successful roast as I'm still learning the Gene Cafe).  Oh, one
other thing, the vacuum brewers are neat to watch in action.  I'm a physics
geek and it's entertaining to watch the water being forced up the stem and
then drain back down when the pot cools.  I'll never tire of that...
On 11/10/06, Kevin  wrote:
<Snip>
-- 
Kevin
"I got a fever and the only prescription... is more cowbell"
  -The legendary Bruce Dickinsonhttp://www.funnyhub.com/videos/pages/snl-more-cowbell.html

12) From: Les
Kevin,
It doesn't drain back it is sucked back by the vacuum created by the
temperature differential.  One thing I like about the older pots is they
really rumble at the end of the trip south.
Les
On 11/11/06, Kevin  wrote:
<Snip>

13) From: Kevin
Les,
They (vacuum) brewers make an amazing cup.  Different than anything I've had
before.  I think I'm slowly leaning towards the cleaner cup they make as
opposed to the FP.  I like the two methods b/c they can give you a different
feel for the same bean depending on one's mood.
-- 
Kevin
"I got a fever and the only prescription... is more cowbell"
  -The legendary Bruce Dickinsonhttp://www.funnyhub.com/videos/pages/snl-more-cowbell.html

14) From: Claus Thgersen
HI,
I do not understand those that claim that vacuum brewed coffee is not as 
bold as FP coffee. In my book fp produces coffee with better high notes, but 
not as much body as base notes like my vacuum brewer currenly also a Bodum 
Santos. Remember to use enough coffee, the 7 grams per cup does only hold 
for a full pot, not for 2/3 or a half pot my standard amount it takes more 
beans.
I use 35 gram for half a liter water in my Bodum Santos.
Claus Thgersen
----- Oprindelig meddelelse ----- 
Fra: "Kevin" 
Til: 
Sendt: 11. november 2006 21:54
Emne: Re: +Bodum Vacuum Brew Question
<Snip>

15) From: Kevin
Claus,
There's definitely more of an taste on the back of the palate for me when I
brew with a FP than when I brew with a Bodum Santos.  The best way for me to
explain it is like drinking an India Pale Ale vs drinking a lager.  They
both have a 'beer' taste but the IPA is more bitter b/c of the hops.  I'd
say, for me the FP is analogous to the IPA and the Bodum Santos is like an
amber lager.  The FP is slightly more bitter (which can be good depending on
what one is looking for) whereas the Bodum Santos goes down smooth.  This
weekend I used the Santos but for tomorrows pre-commute pick-me-up I want
the bolder (slightly more bitter) FP.  This may not be what others get out
of comparing the two methods but the FP is definitely more bitter (read as
'has more bite') for me.
-- 
Kevin
"I got a fever and the only prescription is...more cowbell."
  -The legendary Bruce Dickinsonhttp://www.funnyhub.com/videos/pages/snl-more-cowbell.html

16) From: David B. Westebbe
<Snip>
In theory, the glass will never get hotter than 212.
You can actually boil water in a paper cup set in a campfire, without the
paper burning.

17) From: raymanowen
On 11/18/06, David B. Westebbe  wrote:
<Snip>
-- 
"When the theme hits the bass, I dance the Jig!" - -Virgil Fox at the Mighty
Wichita (ex- NYC Paramount) WurliTzer- 1976

18) From: raymanowen
"In theory, the glass will never get hotter than 212."
Heat flows from a higher temperature sink to a lower temperature sink, in
theory and practice.
If Witch Hazel has a boiling cauldron of water, and Merlin walks by and
tosses in a stone, the stone will absorb heat from the water until the ston=
e
is also 184F.
Hazel and her cauldron are paying a visit to the visitor's center on Mt.
Zebulon @ 14,110ft.
If Merlin's magic rock gets any hotter than 184F, it will clear Hazel's
cauldron of all water.
The glass utensil has to be hotter on one side than the other, or heat won'=
t
flow through it.
A glass container at Charleston, SC is full of water at 212 F. If you ap=
ply
heat to cause the water to boil, the water stays at 212 F while it boils=
,
but the outside of the vessel has to get hotter than 212 F to supply the
latent heat of vaporization to boil the water.
Since the glass is 212 F on the inside wall and necessarily hotter on th=
e
outside bottom, you have introduced stress because of the difference in
thermal expansion. Heating the water from ambient to boiling in the glass
vessel could use up all your rabbit's feet...
Should that happen, I hope you're not too far away. It won't be explosive,
just a Helluva mess. With a glass top electric range, the flood of cooler
water is guaraunteed to crack the top. If you have a gas burner, the flood
will extinguish it but won't turn off the gas. Be there.
-- 
"When the theme hits the bass, I dance the Jig!" - -Virgil Fox at the Might=
y
Wichita (ex- NYC Paramount) WurliTzer- 1976

19) From: John Blumel
On Nov 19, 2006, at 9:55 pm, raymanowen wrote:
<Snip>
<Snip>
Given that this is how stovetop vacuum brewers are designed to be  
used, I don't think this scenario represents a realistic risk. I've  
certainly done this more times than I can count. I wouldn't recommend  =
letting the heating element turn red under the pot, but that's mainly  =
because I think you will likely overheat the pot (symptom: the water  
left in the pot boils vigorously, rather than lightly simmers, while  
the rest of the water is up in the funnel) and you'll end up with a  
burnt flavor to your coffee, but not because the pot is likely to break.
John Blumel

20) From: Aaron
1.21 gigawatts???   *1.21 GIGAWATTS*  are you kidding, where am I going 
to get that kind of energy to boil my coffee at!!
Aaron

21) From: Steve Hay
On 11/19/06, John Blumel  wrote:
<Snip>
I think its a realistic risk..  Aren't most vacpots heat treated to have
residual stress to help with the thermal stresses of boiling?  It is going
to be pretty hard to raise that inner wall much over boiling temperature
because the steam bubbles would have to absorb their entire LHV before
leaving the wall.  Locking in that inner wall temperature means the gradient
can get get pretty high.
-- 
Steven Hay
hay.steve -AT- gmail.com
Barry Paradox: Consider k to be the greatest element of the set of natural
numbers whose description require maximum of 50 words: "(k+1) is a natural
number which requires more than 50 words to describe it."

22) From: John Blumel
On Nov 20, 2006, at 6:56 am, Steve Hay wrote:
<Snip>
It's a plausible theory, but vac pots aren't breaking all over the  
place, so...
John Blumel

23) From: Stephen Niezgoda
It is very difficult to control residual stresses in glass, so design the
"pre-stressed" approach doesn't work.  The pots are made out pf a
boro-silicate glass which has an exremely small (10e-7 /C) thermal expansio=
n
coefficients.  It would take a very large thermal gradient across the
material to generate enough strain in the material to cause ti to shatter.
Now if there is a small nick in the glass and it is subjected to a thermal
shock, then all bets are off.
For those interested the mechanical properties of Pyrex 7740 (most common
boro-silicate glass for consumer products ie vac pots)
*
Mechanical Properties*
Density (at 20 C/68 F): 2.23 g/cm
Knoop Hardness: 418 kg/mm2
Young's Modulus: 64 GPa
Flexural Strength: 69 MPa @R.T.
Poisson's Ratio: 0.20
Shear Modulus: 2.67 x 103 kg/mm2
*Thermal Properties*
Thermal Coefficient of Expansion (0/300 C): 32.5 x 10-7/C
Thermal Conductivity: 1.1 W/mK @R.T.
Specific Heat: 0.18 cal/g-C @R.T.
Strain Point: 510C/950F
Annealing Point: 560C/1040F
Softening Point: 821C/1509.8F
Steve N
On 11/20/06, Steve Hay  wrote:
<Snip>
g
<Snip>
ent
<Snip>
l
<Snip>
l
<Snip>

24) From: Brett Mason
I think I will continue swith my  Cory Vacuum Brewing whilst you scientists
figure out why it can't work as good as it does...
Zen Vac Brewing for Life
Brett
On 11/20/06, Stephen Niezgoda  wrote:
<Snip>
ion
<Snip>
.
<Snip>
l
<Snip>
e
<Snip>
ing
<Snip>
e
<Snip>
dient
<Snip>
s a
<Snip>
-- 
Cheers,
Bretthttp://homeroast.freeservers.com

25) From: John Blumel
On Nov 20, 2006, at 10:55 am, Brett Mason wrote:
<Snip>
I hate it when Brett seems to agree with me. Makes me question my  
whole outlook on life. If I start agreeing with MM, I'm really going  
to worry. (OK, there was that one time but I'm willing to overlook it  
if he is.)
John Blumel

26) From: miKe mcKoffee
Space time continuum stands still as there's an unprecedented three way
agreement:-)
Kona Konnaisseur miKe mcKoffee
URL to Rosto mods, FrankenFormer, some recipes etc:http://mdmint.home.comcast.net/coffee/Rosto_mod.htmUltimately the quest for Koffee Nirvana is a solitary path. To know I must
first not know. And in knowing know I know not. Each Personal enlightenment
found exploring the many divergent foot steps of Those who have gone before.
<Snip>

27) From: Scot Murphy
On Nov 20, 2006, at 5:02 AM, Aaron wrote:
<Snip>
I've got a set-up with a DeLorean you might be interested in. All we  
need is a thunderstorm!
Scot "roasts instantly at 88 mph" Murphy

28) From: Brett Mason
Spew alert... I am sitting at  a breakfast learning  all about the
property where we are staying ... John certainly made me smile... but
I almost  sprayed the whole table
...not that I agree...
Brett
On 11/20/06, John Blumel  wrote:
<Snip>
-- 
Cheers,
Bretthttp://homeroast.freeservers.com

29) From: John Blumel
On Nov 20, 2006, at 11:41 am, miKe mcKoffee wrote:
<Snip>
Well, I suppose there's nothing in the laws of thermodynamics to  
prevent it.
Of course, you guys are top posting, so we're not in complete agreement.
John Blumel

30) From: Leo Zick
Bottom posting sucks

31) From: Jason Brooks
<Snip>
Not to be overly picky, but bottom posting is per RFC.  See:http://www.caliburn.nl/topposting.htmlJason">http://www.faqs.org/rfcs/rfc1855.htmMore over, it is more aesthetically pleasing.  For more, see:http://www.caliburn.nl/topposting.htmlJason
Flame retardant suit on...
-- 
Jason Brooks
jbrookshttp://javajeb.wordpress.com

32) From: Les
I needed this laugh!  Who cares??  When they go, they don't explode, they
implode!  I have imploded two Yama vac pots.  It just gives me a reason to
clean the whole stove top!  Speaking of Vac Pots, my early 1900 model just
keeps on working whereas the new ones seem easy to break.  My regular user
is a 1940's depression glass with a cory rod.  It works awesome!  I am
enjoying a very nice *Ethiopia FTO Dry-Proceess Lekempti *vac pot brewed.
The Jasmine is talking today along with some of the other nice fruit
following by a chocolate carmel finish.  There is just a hint of tobacco at
the front end.  I don't understand Tom's write-up of this one.  This is a
delicate cup in my opinion.  I had a cappo with 50/50  Uganda Bugisu and
Lekempti to start the day.   It was very good with a super chocolate finish
Les
On 11/20/06, Brett Mason  wrote:
<Snip>

33) From: Scot Murphy
On Nov 20, 2006, at 12:22 PM, Les wrote:
<Snip>
I went against my better judgment and tried some of the Lekempti the  
morning after I roasted it. I got all those wonderful herbal and  
fruit flavors then, and it was marvelous! Two days later I had some  
more, and it was as you described it. A little herbal, maybe a hint  
of fruit, and a caramelly finish. (I didn't get tobacco, though.) I  
didn't think it was exactly delicate, but two days' rest made it much  
less robust.
Scot "currently drinking what can charitably be called 'house blend'"  
Murphy

34) From: Jason Brooks
<Snip>
Hopefully then, my ~60 year old Cory will hold fine with it's Cory rod. 
I'll just have to replace the gasket eventually.  Everytime I think it's
time, it surprises me and works beautifully.
Jason
-- 
Jason Brooks
jbrookshttp://javajeb.wordpress.com

35) From: Bob Brashear
Jason Brooks wrote:
<Snip>
Jason,
I agree. Prior to when the rest of you got on MY internet (1982 or so) 
[grin], things were clean. Now we got people posting all over the place 
with fonts and type sizes that destroy retinas and short circuit optic 
nerves.
You're trying to convey information. THAT is the bottom line.
I've got a kevlar/nomex suit that you can borrow after I whether the 
latest blast. I'm also ducking for cover in reinforced bunker.
Bob

36) From: Leo Zick
Ohhhhh...ahhhhhh.. An interweb consortium.....
I say functionality over form. Usenet isnt used on this list, is it?  
The majority of people use microsoft products. For those faithfully  
abhorrent to ms, there are choices like thunderbird. Regardless of  
product, its not in that format any more, as far as I know.
For the fancy folks who use this group in conjunction with gmail,  
usenet 'format' destroys the gmail flow, which automatically adds  
posts in a thread to the bottom.  If each thread is 'garbled' with  
sections cut and pasted out and comments added, gmail continues the  
email in one long string, as opposed to holding its original,  
thread-like, easy to follow, format.
It seems times are changing my friend, and your link is dead too.  ;-)
PS- to humor you, ive scattered the above throughout your email below,  
as well as added a couple (see bottom of email for last word)

37) From: Bob Brashear
Leo Zick wrote:
<Snip>
Leo,
Never did get the emoticon thing down. I'm a text guy. Old fashioned. 
Luddite-ish. Fossilized. But everyone knows I'm grinning and they don't 
have to twist their heads and/or snap their necks to see what I'm trying 
to convey.
The first aol subscribers that hit the alt.physics newsgroups signaled 
the end of the Eden Period.
Bob

38) From: Leo Zick
Don't pull my chain, the web hasn't been around that long, and nor was that
period (or at least the end of it!)
If it helps, I still don't like the 'new' internet lingo either, and
continue to get 'pwnt' on a daily basis.

39) From: Scot Murphy
On Nov 20, 2006, at 11:14 PM, True, Dennis W. FC1 (CVN69) wrote:
<Snip>
It's not painful to read, but it is pretty light. It's Courier, isn't  
it? Something really thin. A heavier font would be better. Maybe we  
could have one shipped out to you at your next port. :)
Scot "if it's a hassle, don't worry about it" Murphy

40) From: Leo Zick
This is a multi-part message in MIME format.
i thought the list was plain text format only?
colors would certainly clear up a lot of confusion..  
From: True, Dennis W. FC1 (CVN69) [mailto:TrueDW] 
Sent: Tuesday, November 21, 2006 12:38 AM
To: homeroast
Subject: RE: +Bodum Vacuum Brew Question
So this would be a better choice? If not this Please send Fonts to the
address below along with any and all coffee and coffee accessories you may
wish! 
Dennis
AKA
FC1(SW) Dennis W. True
CS/CS-5
USS Dwight D. Eisenhower (CVN 69)
FPO AE 09532-2830
Man of many hats!
HG/DB and Z&D roasting in the Indian Ocean
 "On station and on point 165 and counting down." 
"Direct support for troops on the ground is only a call away in support of
Operation Eagle!"

41) From: Eddie Dove
Scot and Les,
I had the same experience as you guys did with the Lekempti.  It was a
great, wild ride after 12 hours rest, but after that it was quite delicate.
Eddie
On 11/20/06, Scot Murphy  wrote:
<Snip>

42) From: Brett Mason
Did Al Gore invent coffee too?
Speaking of RFC, my comment, in response too the request, is simply, get off
yer Dynosore and move on...
Posting about anywhere I can, without spray paint,
Brett
On 11/20/06, Leo Zick  wrote:
<Snip>
-- 
Cheers,
Bretthttp://homeroast.freeservers.com

43) From: raymanowen
If you only leave it turned On for a picosecond, you could probably get that
much energy from a D cell flashlight battery. Who needs it?
If you left it turned On, you might slow the earth's rotation.
Use no energy to boil your coffee...
Cheers -RayO, aka Opa!
"The indisputable truth is that no coffee is fresh if it isn't fresh
roasted." - -Martin Diedrich

44) From: True, Dennis W. FC1 (CVN69)
This is a multi-part message in MIME format.
So the roasting must take place while moving...I'm still trying to get
the powers that be to let me use the jet exhaust to roast my beans! 
 
Dennis
AKA
FC1(SW) Dennis W. True
CS/CS-5
USS Dwight D. Eisenhower (CVN 69)
FPO AE 09532-2830
 
Man of many hats!
HG/DB and Z&D roasting in the Indian Ocean
 "On station and on point 165 and counting down..." 
"Direct support for troops on the ground is only a call away in support
of Operation Eagle!"

45) From: True, Dennis W. FC1 (CVN69)
This is a multi-part message in MIME format.
 
If my font was painful to read would some one say something?
Dennis
AKA
FC1(SW) Dennis W. True
CS/CS-5
USS Dwight D. Eisenhower (CVN 69)
FPO AE 09532-2830
 
Man of many hats!
HG/DB and Z&D roasting in the Indian Ocean
 "On station and on point 165 and counting down..." 
"Direct support for troops on the ground is only a call away in support
of Operation Eagle!"

46) From: True, Dennis W. FC1 (CVN69)
This is a multi-part message in MIME format.
 
So this would be a better choice? If not this Please send Fonts to the
address below along with any and all coffee and coffee accessories you
may wish! 
 
 
 
Dennis
AKA
FC1(SW) Dennis W. True
CS/CS-5
USS Dwight D. Eisenhower (CVN 69)
FPO AE 09532-2830
 
Man of many hats!
HG/DB and Z&D roasting in the Indian Ocean
 "On station and on point 165 and counting down..." 
"Direct support for troops on the ground is only a call away in support
of Operation Eagle!"


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