HomeRoast Digest


Topic: Why am I missing the pops of first crack? (3 msgs / 72 lines)
1) From: Bryan Wray
Well like I said yesterday, I'm really starting to try to focus more on my roasting, and this has been bothering me for a long time.
I roast in Behmor in case people didn't already know.  Today I roasted a bunch of Sumatras (Blue Batak, Lake Tawar 19+, and Classic Mandheling).  I heard about 8 snaps of first on the Lake Tawar, and no snaps on the Blue Batak or Classic Mandheling.
My settings were 115g (about a 1/4 lb) of greens on 1lb (I hate running out of time...); P4; 18:00.  So it was a pretty gentle profile, but I did this on purpose.
So what's up?  These are some huge beans, I should easily be able to hear the cracks.  And it isn't just this one time, I very rarely get a lot of snaps in first when I do hear them, and sometimes I don't hear it at all, just like with the Sumatras.
So am I doing something wrong, or is this sort of normal?  Should I be using more aggressive profiles?  I'm clueless here.  If people need more information let me know.  I'm not sure my line voltage, I can tell you that right now.
Thanks for any help everyone
-Bry
"It is my hope that people realize that coffee is more than just a caffeine delivery service, it can be a culinary art"- Chris Owens of Cafe Grumpy in NYC.
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2) From: Bob Hazen
Bryan,
I'd venture a guess that 1/4 lb on a 1lb setting is doing this.  The 
"weightier" settings not only stretch out the maximum time, but they delay 
the increasing power steps as well.  For a given mass of beans, P4-1lb is a 
slower rise in power than P4-1/2 lb.  It seems odd that you could run out of 
time with 1/4 lb of beans on a 1lb setting.  Perhaps try your 1/4 lb load on 
1/2 lb or use P1.  There aren't any steps in P1; it's full-blast from the 
start.  You can set any weight you want and there's no effect on the initial 
ramp up.  For sure, you should get to 1st crack with 1/4 lb of beans on 
P1-1/2.  If you can't, something is wrong with the roaster, IMHO.
Bob
P.S.  If you can't hear the cracks, how are you deciding to stop the roast?

3) From: Edward Bourgeois
Subtle first crack is better than an explosive one imho. As long as
your getting adequate moisture release and not stalling the roast as
it absorbs extra energy at first crack.
Ed B.
On Fri, Jul 11, 2008 at 10:43 PM, Bryan Wray
 wrote:
<Snip>
-- 
Ed Bourgeois aka farmroast
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