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Old 11-06-2009, 03:14 AM   #1
Walker
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I do thick mashes with 1.0 to 1.2 qts/lb, and I batch sparge. I use an additional 2.0 to 2.2 qts/lb after the mash. Some of this post-mash water is in the form of a mash out (a small hot infusion at the end of the mash, before I run anything off). The rest of this post-mash water is used after the first runnings are in the kettle, and I do one dump of water into the tun, stir, and drain again.

The amount of mashout water is determined by the goal of wanting 50% of my total wort come from the first runnings and the other 50% from the second runnings.

There have been a couple of times where I felt I was over-sparging this way.

Now... I've been reading a lot on HBT lately about people doing thin mashes to keep proper pH and doing only a little sparging, and I've been thinking about making adjustments to my own process to follow along these lines.

What I was wondering was... has anyone ever done their mash and then, before draining ANYTHING to the kettle, just dumped all of their sparge water into the tun and just done a single large runoff to the kettle?

I'm pretty sure I can get all of my water into my 10gal cooler at one time, so I was thinking about trying this on a batch.
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Old 11-06-2009, 03:24 AM   #2
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I don't see anything wrong with that. Of course with a single batch sparge, you might loose some lauter efficiency. No big deal as long as you hit your targets. It might be a good idea to use Kai's efficiency spreadsheet to see exactly what is going on.

 
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Old 11-06-2009, 03:28 AM   #3
Scimmia
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It's called no sparge. There has been some discussion on it, but I'm not sure how you'd search for it.

 
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Old 11-06-2009, 03:28 AM   #4
Walker
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I typically get about 74% efficiency, so dropping a little would be fine by me.
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Old 11-06-2009, 03:30 AM   #5
Walker
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Quote:
Originally Posted by Scimmia View Post
It's called no sparge. There has been some discussion on it, but I'm not sure how you'd search for it.
I saw one thread on no-sparge, but the person had a pump and was just constantly recirculating the water in the tun. I'm not set-up to do that, but perhaps that person was not doing typical "no-sparge" brewing??
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Old 11-06-2009, 03:35 AM   #6
Scimmia
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maybe it's different if you can recirc, but I've always heard no sparge exactly as you described it.

Google comes up with a few results:
http://www.strandbrewers.org/techinfo/nosparge.htm
http://www.tastybrew.com/articles/dennyconn001

 
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Old 11-06-2009, 04:17 AM   #7
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I doubt recirculating will help with no sparge. Kia has a chart that will show the gravity of the first run off with complete conversion. Recirculation or not you can't do much better than that and without much recirculation I get close.

I mash 1.4 qt:lb, mashout and double batch sparge. With my stock barley crusher and a 10-12 lb grain bill I usually get 85% or higher efficiency.
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Old 11-06-2009, 04:32 AM   #8
Walker
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Do you ever get tannins using your process? The pH of the wort on your third running seems like it would be getting far off course, no?
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Old 11-06-2009, 04:41 AM   #9
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I did before I started adjusting pH, but back than I was a fly sparger. I've done over 90% batch sparging without being able to taste any tannins.
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Old 11-06-2009, 06:51 AM   #10
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I usually do a double batch sparge because I have a 5 gallon round cooler, and that's the only way I can get all the water through (I don't really make small beers).

I have checked pH with a pH meter a few times through all the sparges. I had been targeting 5.6 pH. In my experience the mash will be to the low side -- 5.3 - 5.4 with a thickish mash, and the first and second sparge will be at 5.6-5.7.

One time I did a third sparge because I was pushing the limits of my mash tun and the pH went out of range, over 6. If I could do it over I would have just poured the extra water into the kettle.

Another thing to note is I always use the same water profile for my sparge as I do my mash.

In short, in my experience it's been fine pH-wise to do 2 sparges but not 3.

 
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