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ViMonks
Senior Member


Joined: 19 Jan 2014
Posts: 2
Location: Atlanta
Expertise: I love coffee

Posted Sun Jan 19, 2014, 12:43pm
Subject: Coffee beans smell/taste bitter after grinding
 

Hello, all! I'm new to these forums, and I'm having some issues with bitterness in my coffee. I think I've isolated the problem, but I'm not sure what to do about it. First, my setup: I'm using a Baratza Maestro grinder, a Chemex, and a good electric kettle (so I know I'm brewing right at 200*F). I'm using high quality beans (Tonx subscription). They smell delicious.

The problem, I think, is my grinder. I've had it for five or six years now, and I probably haven't cleaned it as often as I should have. It's had some pretty poor quality coffee go through it over the years. There's a fairly strong bitter smell coming from the inside of the grinder, and the coffee itself, after I grind it, smells extremely bitter -- nothing at all like the whole beans smell. Last night, I completely disassembled the grinder and cleaned everything. I let the burrs soak in vinegar for a little while before cleaning them again. The bitterness is still there.

Anyone have any idea what's going on or how I can fix it? Is there anything I can do to clean my grinder more thoroughly and get whatever is causing that bitterness out? I'm tempted to buy a small manual grinder just to see if it really is the grinder.
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kschendel
Senior Member


Joined: 7 Nov 2008
Posts: 280
Location: Pittsburgh
Expertise: I love coffee

Grinder: Maestro
Roaster: Freshroast
Posted Mon Jan 20, 2014, 6:06am
Subject: Re: Coffee beans smell/taste bitter after grinding
 

The Baratza online store lists a box of grinder cleaning tablets for $10, and I'm sure you can find something similar from numerous sources.

I've heard of using "minute" pre-cooked rice to clean out a grinder, but in your case you might want to go with a true cleaning formulation.
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Scottes
Senior Member


Joined: 14 Dec 2013
Posts: 24
Location: Boston
Expertise: I love coffee

Grinder: Baratza Vario, Baratza...
Drip: Chemex, Aeropress, Press...
Posted Mon Jan 20, 2014, 9:36am
Subject: Re: Coffee beans smell/taste bitter after grinding
 

Have you ever ground flavored beans with that grinder? The flavoring oils will contaminate a grinder. You might want to do several cleanings with rice or oatmeal, then one with cleaning tablets.
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ViMonks
Senior Member


Joined: 19 Jan 2014
Posts: 2
Location: Atlanta
Expertise: I love coffee

Posted Mon Jan 20, 2014, 10:54am
Subject: Re: Coffee beans smell/taste bitter after grinding
 

I haven't ground flavored beans through it. I'll give the rice a try though, and maybe get some cleaning tablets if that doesn't work. Thanks for your help.
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DavecUK
Senior Member


Joined: 21 Sep 2005
Posts: 1,449
Location: UK
Expertise: I love coffee

Posted Mon Jan 20, 2014, 8:27pm
Subject: Re: Coffee beans smell/taste bitter after grinding
 

Take the same coffee beans and crush a quantity of them, Pestle and Mortar if you have it. See what the smell is like.
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CoffeeLoversMag
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CoffeeLoversMag
Joined: 10 Jan 2013
Posts: 218
Location: Seattle
Expertise: I love coffee

Posted Thu Jan 23, 2014, 6:47am
Subject: Re: Coffee beans smell/taste bitter after grinding
 

If you clean your grinder thoroughly yet the coffee you had still taste and smell bitter, there might be parts of your grinder causing the problem. Check some parts of the grinder if there is bushing and getting burned, this may affect your coffee and smell not good.

 
Did you know...? Dark roast coffees actually have less caffeine than lighter roasts due to the fact that the process of roasting burns off caffeine.
www.coffeeloversmag.com/theMagazine
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