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chaff stays in the groove?
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Discussions > Coffee > Home Roast > chaff stays in...  
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dagoat
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Joined: 10 Dec 2004
Posts: 320
Location: santa barbara, ca
Expertise: I love coffee

Espresso: La Pavoni Europiccola, BDB...
Grinder: baratza vario
Vac Pot: aeropress
Drip: manual
Roaster: cafe rosto
Posted Sat Jun 15, 2013, 3:08pm
Subject: chaff stays in the groove?
 

just roasted up a cup (volume of greens, pre-roast), of Ethiopia Organic Suke Quto, an SO, from SM.

Anyhow, this time I didn't pay much attention to the cracks, (distracted with 3 year old girl), so I went mostly by looking and time roasting.

Post-roast, the beans are dark and small, darker than the dark rich carmel of a FC+.  The thing is, they are _behaving_ as if the are under roasted.  The flavor is VERY bright, a 19 gram dose still under-fills the 18g portafilter basket (as you might expect from a very light roast), YET: they _look_ very dark... only not the least bit oily.  But worst of all, there remains a thin "rib" of chaff in the groove of almost every bean.

So many things not quite right about this, that I don't know where to start, in diagnosing the problems with the roast.  Any help/suggestions?

The roaster is a Cafe Rosto I've been using for years.  It's basically like an air popper only way more robust, purpose built for roasting coffee, with a chaff trap and cooldown cycle.  

-Peter
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CoffeeRon
Senior Member
CoffeeRon
Joined: 26 Apr 2009
Posts: 749
Location: Tacoma Wa.
Expertise: I love coffee

Espresso: Wega Lyra, Europiccola(still...
Grinder: Macap M7D, Pharos, Vario W,...
Vac Pot: Sunbeam CoffeeMaster
Drip: Melita BCM-4
Roaster: FR SR500,B-1600, SC/TO
Posted Sat Jun 15, 2013, 5:55pm
Subject: Re: chaff stays in the groove?
 

How long did you roast the batch?
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dagoat
Senior Member


Joined: 10 Dec 2004
Posts: 320
Location: santa barbara, ca
Expertise: I love coffee

Espresso: La Pavoni Europiccola, BDB...
Grinder: baratza vario
Vac Pot: aeropress
Drip: manual
Roaster: cafe rosto
Posted Sat Jun 15, 2013, 6:27pm
Subject: Re: chaff stays in the groove?
 

CoffeeRon Said:

How long did you roast the batch?

Posted June 15, 2013 link

For a typical'ish duration... 8 or 9 minutes.

--Peter
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CoffeeRon
Senior Member
CoffeeRon
Joined: 26 Apr 2009
Posts: 749
Location: Tacoma Wa.
Expertise: I love coffee

Espresso: Wega Lyra, Europiccola(still...
Grinder: Macap M7D, Pharos, Vario W,...
Vac Pot: Sunbeam CoffeeMaster
Drip: Melita BCM-4
Roaster: FR SR500,B-1600, SC/TO
Posted Sun Jun 16, 2013, 10:04am
Subject: Re: chaff stays in the groove?
 

My first thought was that it  sounds like the results of a super fast roast. Other than that I don't know, is that you're typical batch size? Anything else that could have happened while watching the little one? One other possibility you probably don't want to hear- maybe your roaster is on the way out. My Freshroast gave me some whacky roasts on the way out- ever consider putting together a SC/TO?
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