New Brunswick Craft Brewers Association

Brewing => Technique => Topic started by: fakr on February 10, 2012, 11:30:38 AM

Title: Making second "weaker" brew from spent mash.
Post by: fakr on February 10, 2012, 11:30:38 AM

Has anyone ever tried making a smaller weak batch of beer from adding additional sparge water to a high gravity mash?

Example.  you make a big 1.080 OG brew with 20LBS of grain, then recirculate an additional 5GAL of sparge water through the mash tun for a second lighter or weaker version of the high gravity brew?


Just curious.

Title: Re: Making second "weaker" brew from spent mash.
Post by: Richard on February 10, 2012, 11:32:42 AM

Check out Parti Gyle mashing.

Title: Re: Making second "weaker" brew from spent mash.
Post by: Chris Craig on February 10, 2012, 11:37:40 AM

I've been thinking about doing this lately.  I think you'd probably want to make a 10 gallon batch to try and get a larger amount of the first runnings for your strong wort, and still have enough for a respectable amount of the weaker wort.

Title: Re: Making second "weaker" brew from spent mash.
Post by: HappyHax0r on February 10, 2012, 11:37:55 AM

I thought it was all one word? (Partigyle)

Pronounced party-girl :lol:.

Title: Re: Making second "weaker" brew from spent mash.
Post by: fakr on February 10, 2012, 11:41:33 AM

Nice, thanks for that Richard.

I think I'm going to consider this type of brewing as an occasional technique when I want two strengths of the same brew.  The weaker being available on tap for "non brewer" guests!  hehe!

I'm assuming you could get mightly close to the 100% efficiency mark too.

Title: Re: Making second "weaker" brew from spent mash.
Post by: Richard on February 10, 2012, 11:44:42 AM

So far as I'm aware you actually do a second mash, not just split the first and second runnings up. Would be interested to know how it turns out if you try it.

Title: Re: Making second "weaker" brew from spent mash.
Post by: HappyHax0r on February 10, 2012, 11:52:28 AM

Me too because I had considered attempting partigyle mashing as well. I had considered making a "big beer" such as a very high gravity stout, and then taking the second mashing and sparge to make a weak stout or porter.

Title: Re: Making second "weaker" brew from spent mash.
Post by: Ian Grant on February 10, 2012, 12:19:29 PM

There's a brewing tv show that does this you should watch it.

Title: Re: Making second "weaker" brew from spent mash.
Post by: fakr on February 10, 2012, 02:26:44 PM

Found this article on "parti-gyle" style brewing, it's history, etc.

http://brewingtechniques.com/library/ba ... osher.html (http://brewingtechniques.com/library/backissues/issue2.2/mosher.html)


Thanks for pointing me in the right direction Richard.

Title: Re: Making second "weaker" brew from spent mash.
Post by: Richard on February 10, 2012, 02:28:58 PM

No problem :)