Sparge vs no sparge.

Rinsing the sugars from the grain

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mpietropaoli
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Sparge vs no sparge.

Postby mpietropaoli » Mon Apr 25, 2016 9:49 pm

Ok. I've read the paper. Several times. I've asked some of the the questions.

My latest: how much fresh malt flavor am I sacrificing by doing a sparge? Our system would allow us to make 12 gallons or so with a no sparge, but if we maxed out the tun, we could make closer to 20 gallons if sparging to 4-5*P.

When implementing low o2 on our system, we could immerse a hose from the hlt to feed into the mash tun below the liquid level, so without o2 ingress (as opposed to the lawn-sprinkler type fly sparge arm we have that has been adding lots of o2).

Thanks again for sharing this great work guys!

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Bryan R
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Re: Sparge vs no sparge.

Postby Bryan R » Mon Apr 25, 2016 10:05 pm

Well, great question. I would say No sparge is the culmination of low o2 first, possible benefits of more flavors second. However many years ago(early 2000's) I did a test where we brewed the same beer at varying efficiencies from 50 to high 90's in 10% intervals. The beer was a pale ale. The common consensus was that the middle efficiency beer 60-70 had better flavor than the lower and certainly better than the upper. We attributed this to the amount of grain in tun. I would say it's subjective at best. We have plenty of spargers in this group that have great success.
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Roachbrau
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Re: Sparge vs no sparge.

Postby Roachbrau » Mon Apr 25, 2016 10:11 pm

mpietropaoli wrote:Ok. I've read the paper. Several times. I've asked some of the the questions.

My latest: how much fresh malt flavor am I sacrificing by doing a sparge? Our system would allow us to make 12 gallons or so with a no sparge, but if we maxed out the tun, we could make closer to 20 gallons if sparging to 4-5*P.

When implementing low o2 on our system, we could immerse a hose from the hlt to feed into the mash tun below the liquid level, so without o2 ingress (as opposed to the lawn-sprinkler type fly sparge arm we have that has been adding lots of o2).

Thanks again for sharing this great work guys!

Sent from my Nexus 6 using Tapatalk

I've fly sparged for over an hour many a time, but I treated my sparge water with 50ppm sulfite. This was quite a few batches back, I've since switched to no-sparge and the beers have improved, but there were other changes made around the same time, so I honestly don't have a good answer for you. You would really need a dissolved oxygen meter to know how much, if any, excess oxygen is making its way in via the sparge.
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mpietropaoli
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Re: Sparge vs no sparge.

Postby mpietropaoli » Mon Apr 25, 2016 10:32 pm

Ok so it sounds like even when adjusting for additional o2 ingress, assuming you had equal or lower DO readings, sparging made for a decidedly worse beer in your case. I was assuming we could deal with, or fully mitigate any negative o2 effects from the sparge.

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Roachbrau
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Re: Sparge vs no sparge.

Postby Roachbrau » Mon Apr 25, 2016 11:05 pm

No dissolved oxygen meter for me (yet), which is why I'm hesitant to provide a definitive answer. I can't say really what caused the improvement, since I also was dialing in recipes and fermentation process. I will say that forgoing decoctions didn't cause a marked decrease in the beer.
Kit_B
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Re: Sparge vs no sparge.

Postby Kit_B » Mon Apr 25, 2016 11:09 pm

I have sparged & found good success.
The main problem is keeping it in the keg.
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Ancient Abbey
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Re: Sparge vs no sparge.

Postby Ancient Abbey » Tue Apr 26, 2016 1:54 am

I sparge, and I have no problems.
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Brew4Fun
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Re: Sparge vs no sparge.

Postby Brew4Fun » Wed Jun 01, 2016 8:39 pm

It would seem that any form of batch sparging that leaves an emptied grainbed prior to the sparge would ruin any attempts at low O2, is that correct? I guess if you're pushing argon or nitrogen into the grainbed as it's draining then you might be alright, but aside from that.
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Re: Sparge vs no sparge.

Postby Bryan R » Thu Jun 02, 2016 8:07 am

Brew4Fun wrote:It would seem that any form of batch sparging that leaves an emptied grainbed prior to the sparge would ruin any attempts at low O2, is that correct? I guess if you're pushing argon or nitrogen into the grainbed as it's draining then you might be alright, but aside from that.


I would agree with you.
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Re: Sparge vs no sparge.

Postby Brew4Fun » Thu Jun 02, 2016 10:12 am

Bryan R wrote:
Brew4Fun wrote:It would seem that any form of batch sparging that leaves an emptied grainbed prior to the sparge would ruin any attempts at low O2, is that correct? I guess if you're pushing argon or nitrogen into the grainbed as it's draining then you might be alright, but aside from that.


I would agree with you.


Thanks. I think it's time for me to implement some permanent system changes then.

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