Author Topic: How does my grist look?  (Read 2182 times)

Offline nateo

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How does my grist look?
« on: May 01, 2012, 12:19:17 PM »
I've been taking more care to condition my malt lately. I run it through the mill twice, once at 1.5mm (0.060") and the second time at 0.5mm (0.020"). What do you think?

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Offline garc_mall

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Re: How does my grist look?
« Reply #1 on: May 01, 2012, 12:21:27 PM »
Looks better than mine, and I am getting 95-100% conversion efficiency according to Kai's chart.
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Offline denny

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How does my grist look?
« Reply #2 on: May 01, 2012, 01:05:30 PM »
Looks a lot like mine after one pass through my JSP MaltMill


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Offline nateo

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Re: How does my grist look?
« Reply #3 on: May 01, 2012, 01:38:04 PM »
Denny- Do you think it's my mill, or operator error?

When I was dry-crushing the grain, I was getting lots of shredded husks. Conditioning helped, but I was still getting a fair amount of broken husks. Conditioning + double grind gives me mostly intact husks.
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Offline denny

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How does my grist look?
« Reply #4 on: May 01, 2012, 01:57:11 PM »
Denny- Do you think it's my mill, or operator error?

When I was dry-crushing the grain, I was getting lots of shredded husks. Conditioning helped, but I was still getting a fair amount of broken husks. Conditioning + double grind gives me mostly intact husks.

Frankly, I don't worry much about shredded husks.  If that crush works for you, it's the right crush.


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Offline Pinski

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Re: How does my grist look?
« Reply #5 on: May 01, 2012, 02:16:13 PM »
Denny- Do you think it's my mill, or operator error?

When I was dry-crushing the grain, I was getting lots of shredded husks. Conditioning helped, but I was still getting a fair amount of broken husks. Conditioning + double grind gives me mostly intact husks.

Frankly, I don't worry much about shredded husks.  If that crush works for you, it's the right crush.

I don't really get the concern about shredded husk.  How is one supposed to release the germ without shredding a little husk?
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Offline Slowbrew

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Re: How does my grist look?
« Reply #6 on: May 01, 2012, 02:28:28 PM »
The husks in your crush look to be fairly in tack.  It looks good to me.

My understanding about shredding the husks too much is that it can cause problems in your mash by not setting up a good filter bed or a stuck mash.  And the small pieces can cause more tannin extraction.  I've never seen the tannin thing myself but that doesn't mean it doesn't happen.  I have had some serious stuck mashes over the years.

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Offline denny

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How does my grist look?
« Reply #7 on: May 01, 2012, 02:38:17 PM »
The husks in your crush look to be fairly in tack.  It looks good to me.

My understanding about shredding the husks too much is that it can cause problems in your mash by not setting up a good filter bed or a stuck mash.  And the small pieces can cause more tannin extraction.  I've never seen the tannin thing myself but that doesn't mean it doesn't happen.  I have had some serious stuck mashes over the years.

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Offline weithman5

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Re: How does my grist look?
« Reply #8 on: May 01, 2012, 02:39:03 PM »
i have run small amounts of grain through my vita mix to a flour and have not had a problem.  of course i brew small amounts and i mash in a bag and still get pretty clear wort.
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Offline Kit B

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Re: How does my grist look?
« Reply #9 on: May 01, 2012, 02:49:22 PM »
Denny- Do you think it's my mill, or operator error?

When I was dry-crushing the grain, I was getting lots of shredded husks. Conditioning helped, but I was still getting a fair amount of broken husks. Conditioning + double grind gives me mostly intact husks.

Why the extra work?
Were you having trouble with stuck sparges, or astringent flavor?
I condition & grind once, through a Barley Crusher set to .024".
I don't have either problem.
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Offline micsager

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Re: How does my grist look?
« Reply #10 on: May 01, 2012, 03:04:52 PM »
That's a much finer grist than I get.  Maybe I should adjust my mill.   But, like Denny says, I get good results, so why change?  (well, he didn't say I DO get good results, just "why change") 

Offline nateo

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Re: How does my grist look?
« Reply #11 on: May 01, 2012, 03:24:51 PM »
Years ago I had a run of 7 or 8 astringent batches. I was doing BIAB. I had switched to a paint strainer bag  which was much coarser than the cheesecloth bags I had been using. I was shredding my husks pretty badly. I was squeezing the bag like it owed me money. I was ending up with a lot of husk material in the BK. I was basically doing everything wrong, except my mash pH and sparge water temp, which were in the right range.

Because of that, I'm concerned about shredded husks. Too concerned? Probably. It takes maybe three minutes or so to reset my mill's gap and run the grist through again. So in the course of a brewday, it's hardly any additional work. Necessary? Probably not, since it sounds like it's a lot more fussing than you guys do.

Having mostly intact husks does lauter much better, and I haven't needed rice hulls when using a lot of wheat. I get a lot of flour because of the fine crush, but the husks set the grain bed up pretty well.

So, I dunno. I guess I just wanted to see if this was a "typical" crush or not. 
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Offline beersk

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Re: How does my grist look?
« Reply #12 on: May 01, 2012, 08:33:28 PM »
Your crush looks good, but I think double crushing at 2 different settings is unnecessary and overdoing it.  But I'm not really one to talk, I can't seem to figure out why my efficiency is around 72% at a .0035" mill setting with proper water adjustments.  It's a mystery, but at least it's consistent.
My crush looks kinda like that.  I was conditioning for a while, then decided that it's not really worth it for me.
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Offline snowtiger87

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Re: How does my grist look?
« Reply #13 on: May 02, 2012, 01:31:30 AM »
I run extra hard stuff like malted rye or wheat through my mill twice put that is about it. I am going to brew with malted spelt in a couple months so that will probably go through twice as well.
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Offline nateo

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Re: How does my grist look?
« Reply #14 on: May 02, 2012, 05:40:38 AM »
RE: double crush - I was trying to simulate a 3-roller mill. The first pass at 1.5mm just kinda squishes it, then the second pass at 0.5mm does the milling. It's going through the mill a total of 2 times, I'm not double-crushing at both settings.

I might be able to get it down to one pass. I haven't tried doing single grinds since I've been conditioning the malt better, so maybe that will be the ticket.
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