Mashing in a Keggle question - Home Brew Forums
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Old 04-22-2011, 12:22 AM   #1
npauley88
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Can I mash 5.5 gallon batches (fly sparging) in a converted keg with false bottom without any negative effects on my efficiency?

My initial thought is yes, but I just want some of your guys' input who have done this before.

Thanks!



edit: by 5.5 gallon batches, I mean batches of a ~1.060 pale ale, brown ale, etc...

 
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Old 04-22-2011, 02:06 PM   #2
npauley88
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bump... anyone?

 
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Old 04-22-2011, 02:10 PM   #3
BenS
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Yes. Search the forums, its common to convert kegs to mash tuns.

 
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Old 04-22-2011, 02:13 PM   #4
chapa
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I dont see why not, people do it with 10g batches. I never did the keg mlt thing because I've always been concerned with insulating it. I dont have a false bottom, otherwise I just figured I'd recirculate and stir if I ever needed to apply direct heat to keep the mash temp up.
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Old 04-22-2011, 02:24 PM   #5
npauley88
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Quote:
Originally Posted by BenS View Post
Yes. Search the forums, its common to convert kegs to mash tuns.
That's not what's in question.

I'm asking is it unreasonable to mash the grain bill for a ~5 gallon batch in the keg MLT.

 
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Old 04-22-2011, 02:40 PM   #6
wilserbrewer
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While it could likely be done, grain bed depth might be an issue? Also temp loss during the rest might also be an isuue unless well insulated or heat is applied / infused.

 
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Old 04-22-2011, 03:56 PM   #7
Catt22
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Yes you can mash the grain bill for a 5 gallon batch no problem. As mentioned above, you will need to come up with a way to maintain the grain bed temperature using insulation or a heat source of some kind. The smaller batch size should not be an issue nor should the shallower grain bed depth. Using a full width FB, the grain bed depth above the FB should be about 5 inches which IMO is plenty enough depth. I often help brew 6 gallon batches on my friends system using a converted keg MT and it works just fine.

 
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Old 04-22-2011, 04:03 PM   #8
npauley88
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Quote:
Originally Posted by wilserbrewer View Post
While it could likely be done, grain bed depth might be an issue? Also temp loss during the rest might also be an isuue unless well insulated or heat is applied / infused.
Didn't think of that grain bed issue.

would it be possible to add rice hulls to every batch to sort of "fluff up" the amount of grains in the tun?


would there be any negative aspects of this?

 
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Old 04-22-2011, 04:25 PM   #9
mrbubbly
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Learning your system, and how to compensate and adjust is the best advice i can think of

 
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Old 04-22-2011, 04:29 PM   #10
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Quote:
Originally Posted by npauley88 View Post
Didn't think of that grain bed issue.

would it be possible to add rice hulls to every batch to sort of "fluff up" the amount of grains in the tun?


would there be any negative aspects of this?
No need to add volume, you should be fine with a 5 gallon grain bill.
Maintaining temp will be a bigger concern. Wrapping it in a sleeping bag or something will help. You should also pre-heat the keggle.

 
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