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Home Brew Forums > Home Brewing Beer > General Techniques > Crushing grains with a coffee grinder?
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Old 03-19-2013, 06:50 PM   #1
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Default Crushing grains with a coffee grinder?

Just bought this little guy for my coffee. Could it be used to crush grains?

http://www.amazon.com/gp/aw/d/B00006...sr=8-2&pi=SL75


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Old 03-19-2013, 06:57 PM   #2
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Originally Posted by fayderek14 View Post
Just bought this little guy for my coffee. Could it be used to crush grains?

http://www.amazon.com/gp/aw/d/B00006...sr=8-2&pi=SL75
Even at its largest coarse setting, it is still a "grinder" and not a crusher. If you're doing partial mashes or extracts with steeped grains, this might be okay...using a mesh bag.

If you're doing all grain, running 6-8 pounds through this thing would take a lot of time, and again....the pulverized grist you get could lead to more problems (stuck sparges, tannin extraction etc.) than it is worth.


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Old 03-19-2013, 07:18 PM   #3
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Right now we are just doing partials and extracts so maybe ill give it a shot and see how it turns out.
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Old 03-19-2013, 08:22 PM   #4
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You're going to spend a lot of time fighting with it and assuming you get a good crush, refilling it even for 1lb of grain.

$25 will get you to the ugly side of the junkyard.
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Old 03-19-2013, 08:28 PM   #5
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Right now we are just doing partials and extracts so maybe ill give it a shot and see how it turns out.
The only grain you should put in that coffee grinder is minute rice when you want to clean it.
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Old 03-19-2013, 09:20 PM   #6
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I can't afford a grain crusher yet,& the crush I've been getting from midwest looks like not all the grains are crushed or even cracked. So I use an old mini food processor half full of grain,& pulse it 3 times,about 2 seconds per pulse. Which is great for BIAB anyway,since it seems to need a finer crush.
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Old 03-20-2013, 12:15 AM   #7
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I put my darker specialty malts (roast barley, choc. malt, etc) into my mash tun just before lautering to get a smoother taste without losing the color. I use a coffee grinder on these since I keep them out of the initial crush. Works fine this way.
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Old 03-20-2013, 01:31 AM   #8
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Originally Posted by BierMuncher View Post
Even at its largest coarse setting, it is still a "grinder" and not a crusher.
Actually, it's worse than that: this type of 'grinder' actually has a high-speed chopping blade rather than grinding teeth or a mill plate, and works by cutting the coffee into successively smaller pieces until it is 'ground'.

The practical upshot of this for a brewer is that it does precisely what you don't want: it tears both the kernels and the hulls into fine fragments, but doesn't actually separate them at all.
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Old 03-20-2013, 04:07 AM   #9
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I would use a rolling pin.....Or smash it with a hammer before I would chop it up in a grinder.
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Old 03-20-2013, 11:18 AM   #10
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Originally Posted by unionrdr View Post
I can't afford a grain crusher yet,7 the crush I've been getting from midwest looks like not all the grains are crushed or even cracked. So I use an old mini food processor half full of grain,& pulse it 3 times,about 2 seconds per pulse. Which is great for BIAB anyway,since it seems to need a finer crush.
How about an "ugly junk Corona mill"? You can get one of those for less than $30 delivered and with a bit of work you'll be doing all your grain with it. BIAB? Easy, set it as tight as it goes. Conventional tun? Wet the grain a bit first to soften the kernels and toughen the husks so they don't tear as easily.


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