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Home Brew Forums > Home Brewing Beer > All Grain & Partial Mash Brewing > Keggle Mash tun
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Old 08-08-2011, 04:06 PM   #1
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Default Keggle Mash tun

What is the most grain you have fit into a keggle mash tun with a false bottom? I have done the calculations but it doesn't account for a false bottom.


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Old 08-08-2011, 05:05 PM   #2
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Does your false bottom sit right at the curve for the bottom of the keggle? I have a Coors keg keggle, which might be slightly different than a BM keg, but about .5-.75 gallons of liquid fits under the false bottom, so you figure the volume of the keg - the false bottom is somewhere between 14.75 - 15 gallons. How much grain you could fit from there would depend on how much water you intend on using. You could fit a good bit of grain (30-32 lbs or so) if you were doing a high OG 5-6 gallon batch (like a Barleywine), or fit a moderate amount of grain (less than 25 lbs) if you were doing a 7-9, maybe 10 gallon lower OG batch (like a session ale).


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Old 08-08-2011, 08:14 PM   #3
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Even with a full false bottom (15-16" diameter) you can get about 33 pounds of grain in there. I think 31 was the most I used, but it had another 1/2" headspace ;-)
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Old 08-08-2011, 09:03 PM   #4
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Biggest I've ever done is about 38-40 lbs in a 15.5 gal keggle. That, plus 2# of sugar, netted me about 9 gallons of 1.100 barleywine.
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Old 08-08-2011, 11:00 PM   #5
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Can always add water to the boil hehe
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Old 08-09-2011, 02:00 PM   #6
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Was just wondering if I'd be able to squeeze out the occasional 20 gallons of pale ale. current recipe is 20lbs for 10g. Guess that won't work out so well. Or I just mash thick. Friend and I brew together and split 10 gallon batches. Be nice to split a 20 from time to time.
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Old 08-09-2011, 02:16 PM   #7
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38-40 lbs here. my false bottom sits right at the curve of the bottom of the keg. so its 15 inches in diameter. i did 11 gallons of an imperial stout and got an og of 1.097. would have been higher if it were just a ten gallon batch.
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Old 08-10-2011, 02:48 PM   #8
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I have a full false bottom and packed 44-15/16 lbs into my A-B half bbl keg MLT for a 12 gal batch of Barleywine. It was .78 qts/lb above the false bottom or .839 if you account for the space under. Took a while to dough in, that's for sure. I wouldn't plan on doing this very often.
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Old 08-10-2011, 03:12 PM   #9
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40 in mine
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Old 08-10-2011, 03:42 PM   #10
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Good. Sounds like I'm set then.


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