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Old 01-23-2012, 06:56 PM   #1
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Default Grain crushing question

I have a question about grain. I buy all my grains from my LHBS and have it run through their mill. I notice that I get a lot of "dust" from the grains. It is hooked up to a drill. Is this "dust" good, bad or does it have any effect at all on anything?

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Old 01-23-2012, 07:16 PM   #2
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You really don't want the crush to end up with a lot of dust (flour) but you'll always get some. So it is starch... which you want, but you don't want to try to mash flour... as it would get stuck. So some OK, lots (like most of your grain bill) not so good.

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Old 01-23-2012, 10:24 PM   #3
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I got tired of having the same issue a few years ago and got a grain mill. Now I buy only uncrushed grains. I condition my grains with a spray bottle and around 3 oz. of water before crushing and never have flour to deal with. You will also notice that your grain husks are intact even with a finer crush giving you a noticeable increase in efficiency and a reduced chance of stuck sparges. With LHBS crushed grains, I rarely exceeded 68% eff. After switching to conditioning and crushing, I usually get between 75% and 80%. It's a little more work, but well worth the benefit to me.

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Old 01-23-2012, 10:27 PM   #4
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Man my LHBS must be unique. Their grain mills are adjustable, and customers can adjust them, to whatever you want from flour to just making noise while whole grain falls through.

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Old 01-24-2012, 02:11 AM   #5
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Quote:
Originally Posted by postal_penguin View Post
Man my LHBS must be unique. Their grain mills are adjustable, and customers can adjust them, to whatever you want from flour to just making noise while whole grain falls through.
I was'nt so lucky. My LHBS pre-crushes 50lbs at a time of most of their stock and keeps it in plastic trash cans. They don't even like to open bags to sell small quanities ( 10 lbs or less ) of uncrushed grains. I generally have to purchase my 2-row in 50 lb bags and then order uncrushed specialty malts from online shops.
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Old 01-24-2012, 02:19 AM   #6
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Quote:
Originally Posted by Nuggethead View Post
I was'nt so lucky. My LHBS pre-crushes 50lbs at a time of most of their stock and keeps it in plastic trash cans. They don't even like to open bags to sell small quanities ( 10 lbs or less ) of uncrushed grains. I generally have to purchase my 2-row in 50 lb bags and then order uncrushed specialty malts from online shops.
You'd think that would lead to a lot of stale grains. My LHBS has all their grain uncrushed but has two mills that are free to use right there. I buy in bulk and take the grain back in to crush.
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Old 01-24-2012, 03:39 AM   #7
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I love conditioning my grain. I do it as well. I get flour but I also crush on a super tight setting. The husks mostly remain intact but I get up to 85% for a single infusion and as high as 97% with a decoction, typically about 90-95%. Again, some flour isn't bad. It's really about your husks not being shredded and doing something crazy like using pumpkin without rice hulls.

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Old 01-24-2012, 04:26 AM   #8
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I was on the fence about crushing and conditioning for some time and read many posts on the subject, but once I did it and saw the results, it became my regular procedure for all batches.

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Old 01-24-2012, 04:34 AM   #9
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This may be a silly question, but would the moisture from conditioning the grain have any effect on a cast iron Corona style mill? I know those things are prone to rust if you're not careful. I assume the amount of water is minimal enough to not really create too much residual moisture, but if anyone has experience with this, feel free to chime in.

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Old 01-24-2012, 04:59 AM   #10
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Having some flour is not a big deal. I do BIAB so it doesn't effect me except for a possible dough ball problem. My LHBS also has two adjustable mills and crushes right then and there.They will do whtever kind of crush you want. They also have about 40 grains, 30 yeasts, and 40 hops all the time, so I guess I'm pretty lucky compaired to some of the guys that have to order over the net, and live with what they get.

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