Reusing Roeselare Yeast Cake - Home Brew Forums
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Old 12-11-2012, 09:33 PM   #1
bribo179
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Right now I am fermenting a Dunkelweizen beer with Roeselare. I have heard this mix does some interesting things as it goes through generational changes. I plan on racking this beer to a better bottle in a month or two to age. I am then going to reuse the yeast cake for another beer.

I had plans of just dumping the next beer into the fermenter, stirring up the cake, aerating, then letting it go to town. Is there any reason I should was the yeast? The whole point of this is to see what the new imbalance and pitch rates will do to the beer.

Anyone have any ideas about this?


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Old 12-11-2012, 09:41 PM   #2
stpug
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You've just tapped into a can of worms

Edit:
I say give the yeast cake a shot. No need to aerate if you pitch on the cake.



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Old 12-12-2012, 10:49 PM   #3
Calder
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I wouldn't wash the yeast. You might wash some of the bugs away.

Traditional washing techniques tries to isolate the yeast. I don't know that the lacto, brett, and pedio (any sherry yeast in this one?) will all be in the same band as the yeast.

I'd try to get the wort as clean as possible going onto the mix to try and keep the resulting cake as clean as possible.

 
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Old 12-13-2012, 11:51 AM   #4
BryanThompson
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It will be fine just using the cake. I put my cake into a gallon jug with apple juice between brews then bottle the juice and dump it into the fermenter with some new yeast when I am ready to use it again.. The juice keeps my bugs alive and makes a great wild brew.
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Old 12-14-2012, 01:24 AM   #5
Calder
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Quote:
Originally Posted by BryanThompson View Post
It will be fine just using the cake. I put my cake into a gallon jug with apple juice between brews then bottle the juice and dump it into the fermenter with some new yeast when I am ready to use it again.. The juice keeps my bugs alive and makes a great wild brew.
Why apple juice? The sacc will eat all the sugars, leaving very little for the Brett, Lacto. and Pedio.

 
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Old 12-14-2012, 01:41 AM   #6
rexbanner
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http://www.homebrewtalk.com/f72/landers-fred-241728/

Sacc knows his ****, if he does it I say go for it. I've got my first beer with roselare fermenting in primary right now. Not to threadjack, but can someone answer this question? Will pitching an entire pack of roselare into three gallons of wort make it more sour? I know that one pack into 5 gallons won't make a very sour beer (at least within normal sour timeframes). I also pitched some dregs from Spontanale and Monk's Cafe.
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Old 12-14-2012, 11:07 AM   #7
BryanThompson
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I doubt there was much if any sacc left in the cake after how long I age my sours. Apple juice is much easier than brewing a one gallon batch. I just pour it in and forget about it.
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Old 12-14-2012, 12:56 PM   #8
CadillacAndy
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Quote:
Originally Posted by rexbanner View Post
Not to threadjack, but can someone answer this question? Will pitching an entire pack of roselare into three gallons of wort make it more sour? I know that one pack into 5 gallons won't make a very sour beer (at least within normal sour timeframes). I also pitched some dregs from Spontanale and Monk's Cafe.
1 pack in to 3 gallons shouldn't really make a difference. The blend of sacch, brett and bugs is balanced. The sacch will reproduce and do it's job first, then the bugs will eat up what's left over. Assuming that it's a relatively fresh pack of yeast.

If anything, the dregs from the other beers will throw off the sacch/brett/bugs balance (in a good way) and will help to get you a more sour beer.

 
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Old 12-14-2012, 01:01 PM   #9
bellmtbbq
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Yea more wont accomplish anything. If you want pretty sour, make a small starter to give the bacteria a head start
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Old 12-14-2012, 02:01 PM   #10
ChugachBrewing
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For what its worth, a friend and I have done 10 generations of Roselare. It is great for generations 1-3, 4-6 were adequate, and 6+ you get some very very strong acidic flavors that take over the entire beer. 2 was definitely the best in my opinion. Despite varying grain bills, most the beers had a similar "generation 4-10" taste to them that beat the crap out of everything else.


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