[Homeroast] A difference of degree....

Tom Ulmer tom at transtate.us
Tue Oct 26 09:51:45 CDT 2010

Maybe my roasting process has evolved askew - I am curious how do you roast
without hearing cracks?

-----Original Message-----
From: homeroast-bounces at lists.sweetmariascoffee.com
[mailto:homeroast-bounces at lists.sweetmariascoffee.com] On Behalf Of Allon
Sent: Tuesday, October 26, 2010 10:26 AM
To: A list to discuss home coffee roasting. There are rules for this
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Subject: Re: [Homeroast] A difference of degree....

> Did they run the same profile?  Meaning did you have first crack and end
of roast at the same times for the two roasts?

Well, I used the PID iRoast - I ran the same program, adjusting only the end
temperature, meaning that the ramp would have been slightly slower, but the
total time was the same. I cannot hear the cracks on this machine.

Both samples were rested, dosed, and brewed exactly the same, 3 days of
rest, two AP scoops, ground in the same grinder on the same setting and
brewed in the same automatic drip pot.

Profile A:
300f 5min
405f 11min
432f 14:15

Profile B:
300f 5min
405f 11min
430f 14:15

There may be more subtle differences creeping in elsewhere, but I can't
think what else. Maybe the thermocouple placement was not optimal, leading
to more variation than is otherwise evident. Got me.

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