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Old 10-07-2012, 06:23 AM   #951
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if you have a smaller pot... just sparge by either dunking (think tea bag) or by pouring hot water through the grains as the bag sit over the kettle. just reduce the full volume of water by 2-3 gallons.. mash and then sparge. it's still BIAB just not full volume.
Was considering it, just wondering what kind of efficiency loss one would get from this; I don't have a second pot large enough to do the teabag sparge in, so I'd have to pour.
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Old 10-07-2012, 01:21 PM   #952
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Was considering it, just wondering what kind of efficiency loss one would get from this; I don't have a second pot large enough to do the teabag sparge in, so I'd have to pour.
if you pour slowly, and squeeze the hell out of the bag when done, you should lose very little. just plan the recipe on 70%. if you get better YAY!! if lower, you didn't crush finer and/or squeeze enough
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Old 10-07-2012, 03:56 PM   #953
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Quote:
Originally Posted by SiriusStarr

Was considering it, just wondering what kind of efficiency loss one would get from this; I don't have a second pot large enough to do the teabag sparge in, so I'd have to pour.
How big of a pot would I need for tea bag sparging? Is 5 gallons too small?
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Old 10-07-2012, 04:21 PM   #954
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How big of a pot would I need for tea bag sparging? Is 5 gallons too small?
On second thought, could I use my bucket if my pot is too small?
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Old 10-07-2012, 04:44 PM   #955
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5 gallon would work... or the bucket..

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Old 10-07-2012, 04:47 PM   #956
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Did my second BIAB today, it went great. I only lost about 2 degrees in the 60 minute mash. Did a mash out this time as well. Looking forward to many more BIAB brews.

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Old 10-07-2012, 04:53 PM   #957
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FYI, posted in another forum as part of a research project on mashout vs no mashout, below are my gravity numbers taken at regular intervals over the duration of a standard no-sparge mash. I picked up @ 4 gravity points with my mashout.

Notes:
-pure BIAB (full volume, no sparge)
-gravity reading taken with a refractometer, each sample was drawn into a pipette and pipette cooled with tap water
-refractometer reads in brix, I used Sean Terrill's calculator to convert the gravity readings

Here you go:

15 minutes: 7.4 brix/1.0282 (mash temp 154F)
30 minutes: 7.8 brix/1.0298 (mash temp 154F)
45 minutes: 8.6 brix/1.0329 (mash temp 154F)
60 minutes: 10.0 brix/1.0384 (mash temp 152F)
75 minutes: 10.5 brix/1.0404 (mash temp 150F)

I then ramped temp up to mashout (168F) over 15 minutes:

90 minutes: 11.2 brix/1.0432 (mash temp 168F)

I let it sit at mashout temp for 15 minutes:

105 minutes: 11.4 brix/1.0440 (mash temp 167F)

Pull bag and squeeze:

pre-boil: 11.5 brix/1.0444 (mash temp N/A)

So, it's only one set of data but it looks like the squeeze is a total waste of time other than getting my pre-boil volume where it needs to be (I only picked up .0004 gravity points). I think I'll just add a tiny bit more starting water and stop wasting my time squeezing!

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Old 10-07-2012, 04:54 PM   #958
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Did my second BIAB today, it went great. I only lost about 2 degrees in the 60 minute mash. Did a mash out this time as well. Looking forward to many more BIAB brews.
congrats! have you asked yourself the important question yet? that would be "Why did I wait so long to try BIAB?"
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Old 10-07-2012, 05:23 PM   #959
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congrats! have you asked yourself the important question yet? that would be "Why did I wait so long to try BIAB?"
Haha I guess brewing all grain with any method was a little intimidating. Extract is simpler, quicker and I knew I could make good beer. BIAB has only added about 30-45 min to my brew day though, and the beer is fantastic.
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Old 10-07-2012, 09:48 PM   #960
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Quote:
Originally Posted by Mysticmead View Post
if you pour slowly, and squeeze the hell out of the bag when done, you should lose very little. just plan the recipe on 70%. if you get better YAY!! if lower, you didn't crush finer and/or squeeze enough
I'll give it a shot. I crunched the numbers and I should be able to do a full volume mash for my next brew, but I'll try this or the bucket if not. Cheers!
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