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Dull Burrs Producing Horrible Tasting Espresso
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Discussions > Espresso > Grinders -... > Dull Burrs...  
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mariog7
Senior Member


Joined: 7 Mar 2011
Posts: 210
Location: NJ
Expertise: I love coffee

Espresso: Quickmill Vetrano
Grinder: Vario
Posted Sun Feb 17, 2013, 8:03am
Subject: Dull Burrs Producing Horrible Tasting Espresso
 

Hello, All.

Haven't pulled a good tasting shot for months now and it was driving me crazy.  Cleaned out my Vario today and checked the burrs.  Seemed very dull to me - I can drag my finger across them with no resistance and they felt smooth, not sharp.  Vario is only a year old, but I do recall a couple of rocks going through my Vario a few months back.  My small artisan roaster doesn't have a machine to filter out rocks and debris...   So I tried extracting the same beans through my Encore (burr grinder that I use for drip) and the taste was spot on once again!  So I'm assuming my dull burs are the culprit for crappy tasting espresso.  Strange, because I could indeed grind fine and consistent, the only sign of dull burrs was bad tasting espresso.

Just curious if anyone else could attribute bad tasting espresso to dull burrs?

And does anyone have a procedure to replace them or do I simply unscrew the 3 screws holding them in place?

Thanks!
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calblacksmith
Moderator
calblacksmith
Joined: 25 Nov 2007
Posts: 7,864
Location: Riverside, Ca, U.S.A.
Expertise: I live coffee

Espresso: ECM Vene. A1, La Cimbali M32
Grinder: Azkoyen Capriccio, Major
Vac Pot: 40s era Silex
Drip: Msl. Com. brewers
Roaster: gave it a try, decided no
Posted Sun Feb 17, 2013, 11:47am
Subject: Re: Dull Burrs Producing Horrible Tasting Espresso
 

Why your 1 year old burrs are dull I can't say but yes, dull burrs will affect the taste of the coffee.

 
In real life, my name is
Wayne P.
Anything I post is personal opinion and is only worth as much as anyone else's personal opinion. YMMV!

Feed the newbs, starve the trolls and above all enjoy what you drink!
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mariog7
Senior Member


Joined: 7 Mar 2011
Posts: 210
Location: NJ
Expertise: I love coffee

Espresso: Quickmill Vetrano
Grinder: Vario
Posted Sun Feb 17, 2013, 11:55am
Subject: Re: Dull Burrs Producing Horrible Tasting Espresso
 

Thanks.  My guess is they are dull because of that rock a few months back...
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Jmanespresso
Senior Member
Jmanespresso
Joined: 18 Jan 2009
Posts: 2,109
Location: Westchester NY
Expertise: I live coffee

Espresso: Alex Duetto II
Grinder: Compak K10 - Vario
Vac Pot: Yama-SY5/SY8/TCA5
Drip: V60, Beehouse, CCD
Roaster: Hottop B
Posted Sun Feb 17, 2013, 5:56pm
Subject: Re: Dull Burrs Producing Horrible Tasting Espresso
 

Well, the ceramic burrs on the Vario dont exactly FEEL sharp..  But the pure essence of proof that using the Encore, with the same beans, produced a good shot, is proof something is wrong.

Could even be the burr carrier is out of alignment.

Id call Baratza, see what they say.  They may want you to send the grinder in so they can have a look.  Dont worry, Baratza defines customer service excellence.

 
Follow Your Bliss

Coffee makes your constantly overcome your prejudices and re-evaluate your own "received wisdoms" when it comes to judging cup flavors. -Tom Owen, SweetMarias
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mariog7
Senior Member


Joined: 7 Mar 2011
Posts: 210
Location: NJ
Expertise: I love coffee

Espresso: Quickmill Vetrano
Grinder: Vario
Posted Sun Feb 17, 2013, 6:18pm
Subject: Re: Dull Burrs Producing Horrible Tasting Espresso
 

Thanks.  How can I align the burr carrier?
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Jmanespresso
Senior Member
Jmanespresso
Joined: 18 Jan 2009
Posts: 2,109
Location: Westchester NY
Expertise: I live coffee

Espresso: Alex Duetto II
Grinder: Compak K10 - Vario
Vac Pot: Yama-SY5/SY8/TCA5
Drip: V60, Beehouse, CCD
Roaster: Hottop B
Posted Sun Feb 17, 2013, 10:51pm
Subject: Re: Dull Burrs Producing Horrible Tasting Espresso
 

Well, you couldnt.  If its out of alignment, it would be a defect, or something caused it to break(possibly a rock).  But i dont personally know of this happening to anyone so I wouldn't worry just yet.

the only thing might be, is the top burr, is held in place by supports that the burr itself locks under.  Sorta hard to explain, but kinda how a portafilter locks into a grouphead.(hard to illustrate, but once you remove the hopper you'll see clear as day how it works)  If that was installed improperly, it could be slightly out of alignment.  Its easy to remove the top burr, make sure the mounting points are clean, and re-install it, but do so at your own risk.(its easy, just know there is always the chance of breaking something when you take it apart, so be aware of that before you do so)

Then again, dull burrs certainly COULD be the answer as well.  Im just throwin out another possibility.

 
Follow Your Bliss

Coffee makes your constantly overcome your prejudices and re-evaluate your own "received wisdoms" when it comes to judging cup flavors. -Tom Owen, SweetMarias
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emradguy
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emradguy
Joined: 31 Mar 2011
Posts: 3,167
Location: Houston
Expertise: I live coffee

Espresso: Duetto II; Twist v2
Grinder: M Major, Macap M4, Pharos,...
Drip: Espro presses; Aeropress
Roaster: H-B "List of Favorites"
Posted Mon Feb 18, 2013, 10:25pm
Subject: Re: Dull Burrs Producing Horrible Tasting Espresso
 

I'd be surprised if your year old burrs are dull. They should last you 10, unless you throw an espresso party for 20 friends every night. I'd put my money on something else being the problem.

 
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Always remember the most important thing is what ends up in your cup!
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mariog7
Senior Member


Joined: 7 Mar 2011
Posts: 210
Location: NJ
Expertise: I love coffee

Espresso: Quickmill Vetrano
Grinder: Vario
Posted Tue Feb 19, 2013, 8:09pm
Subject: Re: Dull Burrs Producing Horrible Tasting Espresso
 

emradguy Said:

I'd be surprised if your year old burrs are dull. They should last you 10, unless you throw an espresso party for 20 friends every night. I'd put my money on something else being the problem.

Posted February 18, 2013 link

You are 100% right.  Gave my grinder a good cleaning and all is well!!!  Sorry for the false alarm.
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emradguy
Senior Member
emradguy
Joined: 31 Mar 2011
Posts: 3,167
Location: Houston
Expertise: I live coffee

Espresso: Duetto II; Twist v2
Grinder: M Major, Macap M4, Pharos,...
Drip: Espro presses; Aeropress
Roaster: H-B "List of Favorites"
Posted Tue Feb 19, 2013, 9:09pm
Subject: Re: Dull Burrs Producing Horrible Tasting Espresso
 

No worries! That's why we're all here, yeah? Glad to hear that's all it was

 
.
Always remember the most important thing is what ends up in your cup!
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