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Old 07-04-2011, 02:38 PM   #1
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Default 50/50 Parti-Gyle Sanity Check

I just wanted to run this by the forum before I got started.

What I would like to do is mash for a 10 gallon recipe. Then run off into separate kettles to make two 5 gallon batches using different hops and yeast. My thought is I would have to sparge into my keggle, stir, then split into the separate kettles. Is this practical? Does it make sense? Is there a better way?

I'm not looking for a partigyle with 1 big and 1 small beer. I'd like it to be split 50/50. The reasons I would like to do this is my 48qt rectangular mash tun gets better efficiency with 20lbs of grain as opposed to 10lbs. Also due to unexpected rain I found my stove can boil 6.5 gallons, so I'd like to try and have to separate kettles on the stove making two different beers from the same mash.

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Old 07-04-2011, 02:57 PM   #2
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That's not partigyle, that's splitting a 10g batch. It'll work fine if that is what you are asking. It's also a great time to experiment with different hop schedules or yeasts.

You say "run off into separate kettles", but I think you know you need to run off into one vessel, then split, to make sure it's all the same gravity.

I think it is odd you get better efficiency from more grain. Must be you are sparging more, which will definitively improve efficiency.

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Old 07-04-2011, 03:09 PM   #3
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Originally Posted by passedpawn View Post
That's not partigyle, that's splitting a 10g batch. It'll work fine if that is what you are asking. It's also a great time to experiment with different hop schedules or yeasts.
This exactly what I want to do. I want to use the same grain bill, but use different hops and yeast.

I was thinking I would need to sparge into one vessel first then split. Easy enough.

The efficiency issue I believe has to do with temp loss due to all the extra head space. I assume. My mash tun is just overkill for 10lbs of grain. I don't believe I'm sparging more since the amount of sparge water depends on the amount of grain. Right?
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Old 07-04-2011, 03:14 PM   #4
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I don't believe I'm sparging more since the amount of sparge water depends on the amount of grain. Right?
Yes, but if you break that amount of sparge water into several smaller sparges, you'll get better efficiency. By putting more grain into your mash tun, there is less space left for the sparge water; I assumed you might be doing multiple sparges because of this lack of volume.
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Old 07-04-2011, 03:21 PM   #5
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My mash and sparge schedule for 5 gal batch goes like this:

Strike with 3gal.
Mash for 60min.
Add 1-1.5 gal. rest 5-10min then sparge into kettle. Completely draining the tun.
Add 3gal. rest 5-10min then completely drain tun into kettle.
Stir take gravity reading.

I have done several 10gal batches before and I use the same process just the strike and sparge volumes are doubled.

My main concern was how to ensure an equal gravity when split into two separate kettles.

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