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Home Brew Forums > Home Brewing Beer > All Grain & Partial Mash Brewing > BIAB Brewing > BIAB: Low efficiency?
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Old 02-18-2013, 01:56 PM   #31
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Originally Posted by seckert View Post
I always get my grains from NB. I brewed yesterday and went to take an OG reading, trying to move fast since my daughter needed picked up from softball and i dropped my hydrometer and broke it. so i am hoping my beer will come out. I did taste the sample and it tasted about right so hopefully it is good! lol
And you didn't have 2 spare hydrometers on hand? This must be the first one you have broken.
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Old 02-18-2013, 02:54 PM   #32
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I had the same problem yesterday with my second Biab attempt. First one went great but the efficiency yesterday was only 55% and will likely end up at 4% abv than 5%. I'm blaming the crush from lhbs as it did not look as fine as my last one where I got over 75%. Thanks for all the answers and I'll ask for a finer crush next time.

Side question. Will low efficiency affect the final beer quality other than lower alc and ticking me off?

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Old 02-18-2013, 03:33 PM   #33
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I think my low efficiency in my case was the crush of the grains from Midwest.

I did find a picture I took, I mixed in some of my grains I crushed and the ones I had from NB.

Most of the kernels(?) you can see are what MW sent me, as that's what the whole bag mostly looked like from them. The white/bright pieces is mostly from me and crushing my Abbey malt. SO it's tough to illustrate how crush looked because I mixed the grains in the bucket.

I was almost going to run them through my corona, and I should have gone with my instinct to do that

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Old 02-18-2013, 05:33 PM   #34
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Originally Posted by mcbaumannerb View Post
I got horrible conversion with BIAB at first too. Then I had the LHBS double mill my grain and I made sure I stirred the crap out of it at the end before pulling the bag out to drain. Once I did that I nailed my numbers.
Four pages and only this one mention of stirring.

Stirring is just as important as crush.

Four things affect BIAB: crush, stirring, temp, and squeeze.
I always had better efficiency with full volume mash (no sparge), and like others have said, the mash-out is un-necessary.
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Old 02-18-2013, 06:19 PM   #35
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Yup, I do stirring and squeezing (my temps have been great with just putting blankets over, I usually shoot a degree or two higher so temps settle, it's cold out here in Philly and I do the brewing outside). I just think the original issue was with the grain crush, because that was the biggest concern, at least from me. I did it once before and did well with BIAB for first attempt, and this was the only thing that changed from 1st attempt to this attempt.

I will say Midwest has great customer service. I brought the issue up to them to just make them aware of the issue and they got back to me. Said they saw a thread on here (probably this one) and noticed the grains didn't looked crushed properly. They have one person milling the grains and over time it just gets out of whack if not payed closer attention to. So they were definitely understanding of the issue and went above and beyond to do what they could to rectify the issue.

So I give them huge props, and would definitely order from them again where (to be honest) was just thinking of avoiding. They want us to make great beer. And I see that while looking around about people who deal with them locally.

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Old 02-18-2013, 06:20 PM   #36
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Hello All,

We just wanted to take a moment to comment on the crush of the grains coming out of our grain room. It sounds like there were some problems recently with the grain mill. I have informed the guys in the mill room as well as the floor manager of the problem, and they have assured me they are looking into it today.

I apologize if we caused any problems, or made anyone's brew-day more difficult than it needed to be. If you want, you can always feel free to contact us via phone, email, or live chat. We are always more than willing to correct any error that was our fault.

Again, sorry for the trouble.

Cheers,

Nick @ Midwest.

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Old 02-18-2013, 06:44 PM   #37
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Originally Posted by RM-MN View Post
And you didn't have 2 spare hydrometers on hand? This must be the first one you have broken.
yes actually this was the first one i have broken...lol and of course my lhbs is closed today, so this next batch will be done blind as well...i trust my technique though so im sure it will come out!
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Old 02-19-2013, 12:38 AM   #38
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I stirred and stirred, I didn't squeeze it super hard but I pressed on the sides of the bag.

I ordered grain for 2 different batches in that order, should I get these re-crushed?

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Old 02-19-2013, 01:37 AM   #39
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I would, someone might tell you differently but those are hard to distinguish from uncrushed grains

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Old 02-19-2013, 01:40 AM   #40
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Quote:
Originally Posted by fizgig View Post
I stirred and stirred, I didn't squeeze it super hard but I pressed on the sides of the bag.

I ordered grain for 2 different batches in that order, should I get these re-crushed?
This is what I'm now using as a baseline...

http://www.homebrewtalk.com/wiki/ind...ting_the_Crush

That doesn't look like any of the good crushed grain, nor does it look like any of the bad examples. That's what mine looked like, and I'd say it doesn't look crushed pretty much at all.
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