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Partial Mash sparging

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MustangJeff

Apprentice Brewer

Posts: 30

Joined: Thu Oct 07, 2010 4:19 pm

Location: Menomonie, WI

Post Fri Apr 22, 2011 8:35 am

Partial Mash sparging

Hi everyone,

I did my first partial mash kit a few weeks ago and I didn't get very good efficiency. My OG was off by a bit and I have a feeling that it was do to a poor sparging method. Basically I was trying to hold 5lbs of soaking grain up with one hand while pooring my sparg water over the top of it with a measuring cup in my other hand. It was pretty difficult to make sure the sparg water was hitting all the grains in this method.

So a couple questions.

1) I've seen post where people steep there mash grains in the sparg water for 10mins and then add this to the wort pot. Is this a good way to go?

2) The best way to get the highest efficiency seems to be slowly trickling the sparg water over the grains (versus dumping a couple cups at a time). I could probably get a large colander to hold the grains above the pot, but what could I use for the slow trickling part? Would a small plant waterer work?

Thanks
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a10t2

User avatar

Master Brewer

Posts: 6833

Joined: Wed Oct 04, 2006 1:54 pm

Location: Silverton, CO

Post Fri Apr 22, 2011 9:46 am

Re: Partial Mash sparging

I'd go with #1, basically batch sparging instead of fly sparging. Just heat up the sparge water in a second pot, transfer the grain bag over, and stir it around for a few minutes. If you wanted you could then drain the grain bag in a colander, or by squeezing it out, for maximum extraction efficiency.
Beer is like porn. You can buy it, but it's more fun to make your own.
http://seanterrill.com/category/brewing/
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MustangJeff

Apprentice Brewer

Posts: 30

Joined: Thu Oct 07, 2010 4:19 pm

Location: Menomonie, WI

Post Fri Apr 22, 2011 10:15 am

Re: Partial Mash sparging

Thanks much. Obviously once I go all-grain I'll go with some sort of fly sparging setup, but until then this should be a nice compromise. I'm assuming that squeezing the grain bag won't cause additional tannin extraction as long as I keep the temp below 170?
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a10t2

User avatar

Master Brewer

Posts: 6833

Joined: Wed Oct 04, 2006 1:54 pm

Location: Silverton, CO

Post Fri Apr 22, 2011 5:17 pm

Re: Partial Mash sparging

MustangJeff wrote:Thanks much. Obviously once I go all-grain I'll go with some sort of fly sparging setup, but until then this should be a nice compromise. I'm assuming that squeezing the grain bag won't cause additional tannin extraction as long as I keep the temp below 170?

Tannin extraction is a pH issue. Squeezing the grain has nothing to do with it. If you have very highly alkaline water you might need to dilute it to keep the sparge pH under control, but hopefully if your water was that bad you'd be treating it anyway.

Any particular reason you want to fly sparge when doing AG? I've tried it and it's just a chore without any benefit, IMHO.
Beer is like porn. You can buy it, but it's more fun to make your own.
http://seanterrill.com/category/brewing/
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duckmanco

Master Brewer

Posts: 138

Joined: Thu Oct 14, 2010 7:44 pm

Post Fri Apr 22, 2011 8:22 pm

Re: Partial Mash sparging

I'm no expert at this, after completing a SINGLE partial mash 3 days ago (Janet's Brown Ale) I did find that using a small liquid measuring cup (8oz.) forced me to slowly sparge the grains (probably took me 20 min or more, 1 slow cup at a time) and I did my best to hit the whole grain bag ( which was held above the brew pot with a colander) and I took my time. I was then pleased to find I hit my 1.069 close enough at 1.066-1.068. So I do think it works, and I plan on sticking with the one cup at a time, and pouring slowly. Give it another go for sure.

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