[Homeroast] Question on roast times

Brian Hoppler brianhoppler at hotmail.com
Sun Apr 26 11:10:55 CDT 2015


The elements can seem severe when a 2.5 pound batch of beans takes 20 minutes on my grill drum roaster during a rain or anywhere between 25 to 105ºF!

> Date: Sun, 26 Apr 2015 11:59:19 -0400
> From: steve.jacobs at gmail.com
> To: homeroast at lists.sweetmariascoffee.com
> Subject: Re: [Homeroast] Question on roast times
> 
> There's nothing like freezing your butt off on a 10 degree winter night
> trying to get your bi-weekly roasts completed.
> 
> On Sunday, April 26, 2015, Barry Luterman <lutermanb at gmail.com> wrote:
> 
> > I roast with a Quest M3. The roaster has an insulating blanket added to the
> > outside. This modification allows me to roast in my garage despite low
> > ambient temperatures. The insulation also allows me to roast 300 grams at a
> > time. That is, on 3 successive roasts i roast 2 lbs of coffee. my roasts
> > take between 12 and 14 minutes. depending on the type of bean ,degree of
> > roast and ambient temperature. Only very occasionally during the dead of
> > winter may a roast approach 15 minutes.
> >
> > On Sun, Apr 26, 2015 at 7:33 AM, Steve Jacobs <steve.jacobs at gmail.com
> > <javascript:;>>
> > wrote:
> >
> > > You have a bit more control over roasting times with smaller batches when
> > > using the behmor, but I'm happy with my roasts, even when I have stretch
> > it
> > > out beyond 20 minutes. It's much easier to get the batch where I need it
> > if
> > > I preheat the roaster a couple of minutes before each batch. One thing
> > that
> > > greatly improved my roasts is upgrading my roaster with the Behmor 1600
> > > Plus controller.
> > >
> > > I hope to complete my gas grill roaster this spring and will
> > theoretically
> > > be able to do five pound batches, but couldn't possibly use all that
> > before
> > > it went stale. With the amount of smoke it'd generate, the neighbors are
> > > likely to kill me too.
> > >
> > > I've been wondering how hard it would be to create a smoke reduction
> > system
> > > using a 10" duct fan, a range hood and a high flow carbon filter. That
> > > project is likely next in the queue after the arduino-based temperature
> > > controller for the gas grill roaster.
> > >
> > > Steve
> > >
> > > On Sunday, April 26, 2015, Greg Hollrigel <ghollrigel at gmail.com
> > <javascript:;>> wrote:
> > >
> > > > From over the years reading on the internets, I've developed the
> > thought
> > > > that roasts should be completed in 15 minutes or less.  Some have said
> > > that
> > > > if beans roast longer it can lead to baking.  I don't always follow
> > that
> > > > with my roasts (e.g., I roasted 1 pound of Peruvian beans that took
> > > almost
> > > > 20 minutes).  And I probably would have a hard time telling the
> > > difference
> > > > (I just know either it's good or not good :-)).
> > > >
> > > > I have a Behmor 1600.  It seems the only times that I get a roast done
> > in
> > > > less than 15 minutes is if I roast 8 oz of beans at a time.  10 oz of
> > > beans
> > > > gets to 15-17 minutes or so.  Usually, I'm on a P3 profile.
> > > >
> > > > So my question to the group, especially those that roast large amounts
> > of
> > > > beans at a time, do you still aim for this "less than 15 minute" goal
> > > when
> > > > roast 1 pound, 5 pounds, or more?  Doesn't it get more difficult to get
> > > > those larger roast batches to be done in the same amount of time as a
> > > > smaller sample size?
> > > >
> > > > Thanks, and I'm just curious.
> > > >
> > > > Greg
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> > >
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