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Brewing Topics => Brewing Discussion => Topic started by: keithshead on September 15, 2009, 08:44:09 PM

Title: Relationship between irish moss and carbonation?
Post by: keithshead on September 15, 2009, 08:44:09 PM
Can irish moss interfere with priming? i.e; all the yeast settles out and there is not enough left for carbonation
Title: Re: Relationship between irish moss and carbonation?
Post by: MaltLicker on September 16, 2009, 07:17:44 AM
One uses irish moss (i.e., kettle finings=moss, whirlflock, SuperMoss, etc.) in the boil kettle in the last 10-15 minutes.  It helps coagulate some proteins out of the wort. 

So, the irish moss and all the unwanted proteins attached to it fall to the bottom of the boiler during cooling.  Hopefully, one is leaving it behind or straining it out on the way to the fermenter. 

If any moss made it to the fermenter, I personally have not read that it negatively affects yeast performance.  There are different "finings" used to clarify beers in the final days of conditioning or in the keg.  I believe it is possible to use too much of those finings and inadvertantly drop some of the proteins that boost body/mouthfeel, and also drop so much yeast that bottle priming might be tough.  Those finings include gelatin and PolyClar. 
Title: Re: Relationship between irish moss and carbonation?
Post by: UselessBrewing on September 16, 2009, 08:26:44 AM
Irish Moss will not interfere with priming. As ML stated it is used in the kettle, which will not affect the last stage of the process. One of my first AG Batches called for 1 teaspoon of Irish Moss and I added the entire container  :o  . No ill effects were noticed and the bottles carbonated with no problem.

Cheers
Preston
Title: Re: Relationship between irish moss and carbonation?
Post by: keithshead on September 16, 2009, 03:28:34 PM
Cheers lads. Big help.  Still  new  to this and  was not  aware i was not  supposed to add finings if i am bottling beer.  reckon i added  a tad  too much  gelatin to  the secondary and my kolsch now seems to be  struggling to carbonate
Title: Re: Relationship between irish moss and carbonation?
Post by: UselessBrewing on September 17, 2009, 07:03:37 AM
It will carbonate, just give it time. How long has it been since you bottled it?

Cheers
Preston
Title: Re: Relationship between irish moss and carbonation?
Post by: keithshead on September 17, 2009, 09:19:07 PM
oh, it's just under three weeks now. The recipe was for 5gallons and one and a quarter cups of DME for priming. Low?
Title: Re: Relationship between irish moss and carbonation?
Post by: MaltLicker on September 18, 2009, 07:18:48 PM
Amount sounds OK.  DME is tougher to ferment than CS, so if you did drop more yeast than desired, it may take a while.  Set it aside and brew again!
Title: Re: Relationship between irish moss and carbonation?
Post by: SOGOAK on September 19, 2009, 11:14:27 AM
Corn sugar is cheaper too and has never let me down.  If I am bottling from a long primary fermentation, I actually let a little yeast go from the carboy to the fermentor.
Title: Re: Relationship between irish moss and carbonation?
Post by: SOGOAK on September 19, 2009, 11:16:24 AM
Opps! I meant bottling bucket