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Old 04-11-2014, 01:40 PM   #11
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When you test for conversion, are you getting wort or mostly grains. The grains are where you need to test for conversion.

I bought a cheap Corona mill knock off and use that to mill my grains. I have it set as tight as I can.

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Old 04-12-2014, 08:05 PM   #12
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It's typically a spoonful of mixed grain and wort. Early on I deliberately tested for conversion when I knew it hadn't yet fully converted just to be sure I was testing correctly. I have seen conversion as early as 15 or 20 minutes but I still see my efficiency improve with a longer mash. Once I get past 75 minutes I don't see any more increase. I've never really questioned it but assumed there must be some explanation I just wasn't aware of. As long as it works I don't really care but I am a little curious.

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Old 04-12-2014, 11:51 PM   #13
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Default BIAB: Dunk Sparge!

Back on topic of dunk sparing the grain bag, I have done it, and it works well.

Recently I have been practicing a pour over sparge withe the grain bag hanging over the kettle, perhaps not quite as efficient, but much easier...I like easy btw.

The added benefit of the pour over sparge is that you simply sparge to your pre boil volume. Basically I just eyeball the main mash strike water volume, them fine tune with the pour over sparge to hit PB volume. No calculators, no measuring just RDWHAHB and all is good.

Typical sparge is about a gallon on a 1/4 keg, 8 gallon batch.

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Old 04-13-2014, 03:55 PM   #14
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Sorry for straying off topic but, yes, I have had better luck with my 8 - 10 quart "trickle sparge". The dunk sparge sometimes seemed to improve my efficiency and sometimes didn't - varied from 72-78%. My LHBS guy said the secret was to sparge as slooowwwwly as humanly possible. At first I just used a measuring cup to drizzle over the raised grain bag. I aimed for about 3 minutes to empty a 1 qt measuring cup. That was tiring on the arm. So then I created my previously described sparge bucket. Since I hang my grain bag in a turkey fryer basket, this bucket rests nicely in the top of the basket. Still fine tuning but I consistently get 80-82% efficiency.

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Old 04-14-2014, 04:52 AM   #15
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Another good day for my dunk sparge. Beersmith said 78% mash efficiency, 93% brew house efficiency. I measured the gap in my captain crush. I'm running about 60 on the upper roller and 30 on the lower. I'm also running it through twice. It's pretty fine after that. I actually had to massage the bag a bit when I first pulled it to get it draining well.

Should I worry about being too efficient?


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