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Irish Moss

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Irish Moss

SKU: 7590x

Irish Moss is a seaweed derived fining agent used by many brewers to help make a clear beer without the need for a filter, and to prevent chill haze.

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Irish Moss is a seaweed derived fining agent used by many brewers to help make a clear beer without the need for a filter, and to prevent chill haze. Irish Moss accelerates protein coagulation during the end of the boil which helps prevent chill haze. Many of our brewers use this product in every batch. Use 1 teaspoon per 5 gallon batch, and it is added with 15 minutes remaining in the boil.
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Additional Information

Gravity Level Medium

5.0 / 5.0
62 Reviews
5 Stars
4 Stars
3 Stars
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1 Star
Makes for a clearer beer
The Irish moss causes the proteins to clump together and settle into the trub. This results in clearer beer once its ready. I add it during the last 5 minutes of the boil.
August 5, 2013
Simple clarifier
Doesn't make our brews "American" clear...thankfully. But it does cause much of the suspended solid to coagulate and fall to help create a more delightful, worldly ale.
August 6, 2013
Great value!
This is an easy way to clear your beer. I use it in every batch.
August 23, 2013
Makes a good cold break
This is good stuff, I add it, and immediately the egg drop soup cold break forms and the proteins start coagulating. This helps keep my beer clear and is easy to use and inexpensive.
May 31, 2013
Works well
It's crazy how little moss you need to add to make a big difference to your beer. I have yet to crack open my first batch of bottled beer after using this stuff but I can see right through the bottle - which should be a good indicator that the beer OUT of the class will be quite clear. I'm impressed.
June 25, 2013
Love it
Have used this every time since I received it. I definitely see a difference in clarity.
July 14, 2013
Protein Coag
I have used the Irish moss a couple of times, adding it the last 15 min of the boil. I do, however, extract brew, but I think this makes a big difference in the clarity of my beer compared to not using it. You can immediately see the little clumps of "gel" (protein) at the bottom of the kettle at the end of the boil. A definite must if you are concerned with clarity. It is seaweed and smells like it, BUT it does NOT add or alter taste, so dont worry.
July 16, 2013
Less chill haze
When I started brewing I read that some brewers add this to every batch. It was cheap, so on my 3rd batch I gave it a try. I am on my 74th batch of beer now and still use this stuff in every batch. For the price, it would be stupid not to use it. It requires very little effort on my part and is very cost effective. It wont give you show quality clearness, but still rocks. Highly recommended!
July 18, 2013
Use it in every batch
Great product. I have been using it in every batch for the past year. With just one tsp. in each brew, I get a nice clear brew every time. I would certainly recommend this to everyone.
September 2, 2013
Lasts a long time
A tea spoon at the end of the boil helps clear the beer. There is now less haze.
September 13, 2013
Customer Q&A
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Browse 4 questions Browse 4 questions and 9 answers
I used a small amount of Irish Moss in my 1-gallon brew, and I found that there was more sludgy sediment than usual at the end of my cooling phase. Should I pour that sediment into my fermenter, or should I discard it?
A shopper on Apr 12, 2018
BEST ANSWER: Discard it. You use Irish Moss as an agent to bind with and sink these particulates to the bottom, as trub, to clear your wort and keep the flavors from becoming tainted..
What type of seaweed is this derived from?
A shopper on Mar 8, 2018
BEST ANSWER: I can't answer your question. I doubt if most brewers could. And, respectfully, I'm not sure that it matters. You won't consume it because it will fall into the trub and be discarded. Its purpose is to attach to proteins and other ingredients that cause clouding and off taste and cause them to fall out. It does that very well. I realize that this is not responsive, but I hope that it is helpful.
Is this recommended for use in a wheat style beer or is the cloudiness it traditionally carries desirable?
Colby F on Oct 29, 2017
BEST ANSWER: While Irish Moss helps to clear most Ales I don't think it will clear up a wheat style beer, I'm not sure anything short of massive filtration will totally clear a wheat brew.
It couldn't hurt to use a teaspoon and certainly no cost to worry about... Good luck.
How many teaspoons would be in a package?
B A on Jan 28, 2016
BEST ANSWER: I haven't used it yet but I want to say about 6 possibly

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