HomeRoast Digest


Topic: nearly ruined a roast :( (15 msgs / 347 lines)
1) From: Sandy Andina
Decided to go ahead and roast 1/4 lb. of my precious stash of Jamaica  
Blue Mt. Mavis Banks to bring to a friend's house Thanksgiving  
(they've been drinking a "JBM Blend" they got at Costco which is okay  
but not the real thing). So I loaded a cupful into my i-Roast and hit  
the Preset 1 (for "soft" beans/lighter roasts) and then the "Temp"  
button directly beneath to turn it on. To my horror, the roast  
proceeded like a bat out of hell, reaching first crack in two minutes  
and second in a little over four!  I had to hit "cool" at 4:30! And  
in order to make sure it cooled fast enough, I had to loosen the  
chaff collector, causing beans to occasionally pop out during  
cooling. Came out almost Vienna.  Bean I chewed tasted bright but  
with a bit of dark roast character...which you DON'T want in a JBM.   
Waited 20 min. and then put in a cupful of Sumatra Lintong (per my  
husband's request, as I have maybe a couple of potsful left). That  
one took over 4 minutes to reach 1st crack and 7 minutes to get to  
the same FC+ that the JBM reached in 4:30.  Is the JBM a "softer"  
bean?  I'm seriously considering getting a varactor to "calm down"  
the voltage.  (I'd have roasted outdoors tonight--it's about 32F  
outside, but this i-Roast runs hot--but it's loud enough to wake the  
neighbors).
On top of everything else, the NY Times Crossword site hasn't  
uploaded its Wed. puzzle yet (over 3 hrs. late) and I'm jonesing for  
a new puzzle.  Moreover, I think our squirrel is back in the den  
closet (having evaded the trap we set in the ceiling) and the trapper  
can't come till at least 10 am tomorrow.  (At least I HOPE it's the  
same squirrel that stared me down on the bookshelf last week, and not  
the gigantic raccoon that ate through the ceiling and "christened" my  
eMac last April--we had to have her babies removed from inside the  
closet wall, and she never came back after we set several traps and  
then closed up the gap in the soffit, which we noticed had opened  
back up a couple of hours before the squirrel paid us his visit. Last  
thing I want is for my cat to confront it--my cat wouldn't stand a  
chance, notwithstanding the fact that all his shots are current). And  
my car's in the shop. Dang.
Sandy
Reluctant Proprietor, Edgewater Indoor Residential Urban Wildlife  
Preserve
www.sandyandina.com

2) From: mIke mcKoffee
True JBM, like you get from Tom, is a high elevation somewhat hard bean as
Island coffees go but not hard compared to really high elevation coffees
like Kenya. It roasts very similar to the high elevation Konas.
Really sounds like something went haywire with your I-Roast that batch.
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.
www.MDMProperties.net 
<Snip>

3) From: Sandy Andina
I think I may have inadvertently bumped up the temp in Stage I when I  
hit the switch to turn the roast on after I selected preset 1.
On Nov 23, 2005, at 1:22 AM, mIke mcKoffee wrote:
<Snip>
Sandy
www.sandyandina.com

4) From: Alchemist John
I seem to remember the i-roast was weight sensitive and 1/4 lb is a 
bit under norm, isn't it?  How much did that subsequent 1/2 c 
weigh?  The i-roast just hit it with the power to reach the profile 
with a set weight so over shot.
At 23:22 11/22/2005, you wrote:
<Snip>
John Nanci
AlChemist at large
Zen Roasting , Blending & Espresso pulling by Gestalthttp://www.chocolatealchemy.com/

5) From: Aaron
for best results with the I roast, you want to roast close to capacity.  
in other words, do 5.5 oz to 6 ounce roasts.  If you do more, the beans 
don't move around as much and you can start cooking the bottom ones way 
too fast.  Too little beans and the air goes by too fast and the temp is 
a bit cooler than originally dialed in.  Of course the size of the bean, 
how much they expand etc can make a big difference too but I find that 
overall the i roast does best when roasting near it's rated batch.
Another tip is that when cooking with it, if it seems the beans are not 
moving around as much, pick it up and tilt it around in a circular 
motion, don't have to go very fast with it, just slowly well... swirl 
it.  Seems the cooking works better that way in some circumstances.
Aaron

6) From: Les
WOW Sandy,
I complained about a minor Bee problem and had Alchemist John's expert
advice!  They were gone with one quick solution!  I have some single malt
that might be needed in the JBMMB with all your woos!  I would put a smalle=
r
load in the I-Roast with the JBM.  JBM tends to be a heavier bean, thus I
think you had a very dense fluid bed causing a faster roast.  Do you measur=
e
your beans or weigh your beans?  Weight is always a better way to go with a
fluid bed roaster.
Les
On 11/22/05, Sandy Andina  wrote:
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7) From: Sandy Andina
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It was 1 level cup (8 fl. oz.) of beans, which when roasted fills a  
1/4 lb. clear one-way-valve bag (about 10 fl. oz.).  My guess is that  
the 1 cup of beans weighed about 6 oz. to start and 1/4 lb. (4 oz.)  
once roasted.  Perhaps the JBM and other high-grown Latins are  
lighter and less dense green than are Sumatras.
On Nov 23, 2005, at 7:35 AM, Alchemist John wrote:
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Sandy
www.sandyandina.com
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It was 1 level cup (8 fl. oz.) =
of beans, which when roasted fills a 1/4 lb. clear one-way-valve bag =
(about 10 fl. oz.).  My guess is that the 1 cup of beans weighed about =
6 oz. to start and 1/4 lb. (4 oz.) once roasted.  Perhaps the JBM and =
other high-grown Latins are lighter and less dense green than are =
Sumatras.
On Nov 23, 2005, at 7:35 AM, Alchemist John =
wrote:
I seem to remember the = i-roast was weight sensitive and 1/4 lb is a bit under norm, isn't = it?  How much did that = subsequent 1/2 c weigh?  = = --Apple-Mail-8--152753492--

8) From: Sandy Andina
I've been measuring but I think I will start weighing instead (though  
it is a bit of a pain to reset my scale back to ounces from grams and  
vice versa). How many grams is 6 oz. avoirdupois?
On Nov 23, 2005, at 11:35 AM, Les wrote:
<Snip>
Sandy
www.sandyandina.com

9) From: miKe mcKoffee
http://www.sciencemadesimple.com/conversions.htmlBean weight isn't necessarily the best method for fluid bed roasting with
non user controllable heat and fan speed. Nor is by volume. Either will get
you in the ballpark but same weight and or same volume of different beans
will behave differently. Best method I've heard is enough greens so they
barely move when cold, bean movement increasing as beans heat and loose
moisture.
Kona Konnaisseur miKe mcKoffee
URL to Rosto mods, FrankenFormer, some recipeshttp://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.
www.MDMProperties.net 
<Snip>

10) From: Mike Chester
I have the I-Roast 2 and the manual says to use 150 g. per load.  I have had 
good luck with this amount. At 28 grams per ounce, that come out to 5.35 oz. 
I have found that both presets heat up too fast IMO.  I have programmed in 
the 3 stage program that Tom shows in the tip sheet as well as a couple of 
slower start 5 step roasts.  They seem to work out better with my stock 
machine than the presets.
Another Mike

11) From: Mike Chester
miKe,
That sounds good, but with the I-Roast, the fan speed automatically varies. 
When the thermostat is calling for heat, the fan slows down and the beans 
barely move.  When it gets to temp, the fan speed increases and the beans 
move more.
Another Mike

12) From: Sandy Andina
I have the older i-Roast, so I'd have to reprogram it every time I  
plug it back in after disconnecting. Huge PITA. But I guess I'll have  
to start.
On Nov 23, 2005, at 1:48 PM, Mike Chester wrote:
<Snip>
Sandy
www.sandyandina.com

13) From: miKe mcKoffee
I'd forgotten about that. Yeah, I always thought that was a weak design for
primary heat ramp control in an air roaster. Seems better and much more
controllable to have full out fan when beans cold and the heaviest and vary
the heater to control ramp and then have the ability to decrease fan, if
needed, as beans lighten in weight. A PID controlled $3 P1 ala Michael
Dhabolt much better programmable and controllable roaster than an I-Roast (I
or II) IMO!
Kona Konnaisseur miKe mcKoffee
URL to Rosto mods, FrankenFormer, some recipeshttp://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.
www.MDMProperties.net 
<Snip>

14) From: Mike Chester
<Snip>
You are probably right.  I don't think that my I-Roast 2 will be my final 
roaster, but I think for an off the shelf machine in the under $200 range, 
it is pretty good and offers more versatility than many other off the shelf 
units.  It at least gives me a place to get started.  The only real 
complaint that I have about it is that it is so loud that it is often 
difficult, if not impossible to hear the cracks.  As I get more involved in 
the obsess... er hobby, I will probably start to tinker more.  I have been 
listening to what the people on this list have to say about their various 
methods of roasting, both pro and con.  For now, however, I want to 
concentrate on learning to do the best with what I have.
Another Mike

15) From: mIke mcKoffee
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<Snip>
You are right too! Off the shelf the I-Roast II likely affords the most
versatility of ANY stock commercial home roaster, more versatility than a
HotTop. (am not saying better than HotTop, more flexible profile wise) No
question that at it's sub $200 price an excellent value with reasonable
performance. Greg reports getting fairly good results simply lowering the
initial voltage to 115v to slow the (possibly) too fast first stage initial
ramp. No mod to the actual I-Roast required, simply a variac. Seems to not
be too low for the digital controls yet enough lower to noticably affect
heater performance even with corresponding reduced fan speed. 
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.
www.MDMProperties.net


HomeRoast Digest