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Topic: max roast time? (8 msgs / 117 lines)
1) From: David Iverson
Hi All,
I've been experimenting with some devices to roast
larger batches (1 lb +).  E.g., I rigged up an old
bread machine.  It managed to get to a good Full City
roast level, but took a long time doing it (about 45
How long is too long for a roast?  Is 45-60 minutes
for a batch too long?  Most profiles I've seen seem to
be in the 10-20 minute range.  I expect there's a good
reason for that.
Any thoughts on really long roasts?
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2) From: Michael Dhabolt
On 11/18/06, David Iverson  wrote:
You are correct.
Mike (just plain)

3) From: Ken Mary
My longest drum roast was 29 minutes and resulted in very good flavors, but
no brightness. Lack of brightness/acidity is the main problem with long
roast times. Also, poor control may let the bean temperature fall, and this
can result in a significant loss of flavor. It may also create some
unpleasant flavors.
Most of my roasts are in the 20 minute range, but a lot of this time is
spent in heatup and drying. My profile times after the bean temperature
rises above 125C (257F) are about 8 to 12 minutes for a city roast.
You need to reduce your roast time, either by adding more heat or using less
beans. Good mixing is important to prevent scorching and provide a more even

4) From: raymanowen
With a heat gun in my wife's deep Kitchen Aid mixer bowl, 800g was too much
for Glorious Orange HG with switch. I was at 15 minutes, just starting to
get 1st Crack!
1st was done about 25 minutes in, and I couldn't coax any beans to 2nd. No
smoke, so I had a nice origin flavor- just barely a City- on the Panama
Berlina. The popper or Fresh Roast could top it off if I wanted to scorch it
more on a brew-by-brew basis. I didn't and I won't do that much again.
I think excessively long heating drives out the moisture that retards smoke
and causes the beans to pop and snap. Popcorn won't pop if it gets too dry.
Cheers -RayO, aka Opa!
Got Grinder?

5) From: Sheila Quinn
I wouldn't keep using the mixer bowl since roasting in it will 
permanently stain the bowl. Your wife may not be too happy with you!
raymanowen wrote:

6) From: Lynne
I agree, Ray. In fact, if she isn't aware of your *ahem*, experiment - 
I'd hide that heat gun pronto (before she decides that it would also 
serve as a useful weapon!!!!
  ; > )
On Nov 19, 2006, at 3:07 PM, Sheila Quinn wrote:

7) From: raymanowen
Ha! It's one of the few things I keep pristine and sparkling around Chateau
Doublewide. -ro

8) From: raymanowen
She's on to me- my Celtic Critic. We're in this together. Heads up- if you
get a Mazzer Major, it will have the right-of-way wherever you set it. The
cat's out of the bag!
Cheers -RayO, aka Opa!
"The indisputable truth is that no coffee is fresh if it isn't fresh
roasted." - -Martin Diedrich

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