Fermaid O Yeast Nutrient

Fermaid O Yeast Nutrient

Please select from the following option(s) to see pricing and availability.

The Fermaid line of products are a range of nutrients that have been adopted from winemaking and put to use supporting beer fermentations as well.
Fermaid O is a newer formulation of the long trusted Fermaid K nutrient which replaces the inorganic DAP in Fermaid K with an organic source of nitrogen instead. The organic nitrogen in Fermaid O is better for your yeast, and that results in better beer!
Organic Nitrogen is easier for your yeast to digest, resulting in a smoother, more consistent fermentation. Fermaid O fermentations show fewer temperature spikes, which minimizes negative effects that can be caused by heat. Compared to DAP, Fermaid O results in more consistent and complete fermentation, and lower levels of negative sulfur compounds and other off-flavors.
Use at a rate of 1.5g / gal of wort. Dissolve in a small amount of wort or water and add to your fermenter at pitching.
Like Fermaid O? Then you will love CellarScience™ FermFed DAP Free Yeast Nutrient!
Community Q&A

Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 1 question Browse 1 question and 50 answers
Why did you choose this?
MoreFlavor Store
Cust Serv Recommended
Mitch M on Oct 22, 2020
Yeast nutrient - Organic nitrogen
Steve C on Oct 20, 2020
Cust Serv Recommended
Mitch M on Oct 22, 2020
Stagger nutrient additions for mead using to TOSNA 3 method
Gregory L on Oct 20, 2020
Yeast nutrient - Organic nitrogen
Steve C on Oct 20, 2020
Wanted yeast nutrient with no DAP
David M on Oct 15, 2020
Need it for wine fermentation
Steven H G on Oct 5, 2020
Good nutrient for ferment
Justin Z on Oct 3, 2020
To make seltzer
Jeff H on Sep 30, 2020
Trying it out instead of K.
Jan D on Sep 29, 2020
Great results
Stephen A on Sep 28, 2020
it works
Roger K W on Sep 23, 2020
Harvesting next week
Roger P on Sep 23, 2020
Craig G on Sep 19, 2020
James A on Sep 17, 2020
I am low of supply
Richard Mortimer on Sep 17, 2020
organic nutrient
Charles P on Sep 16, 2020
previous use
David C A on Sep 10, 2020
Recommended by most wine makers
Raffaele P on Sep 9, 2020
It was recommended to insure good fermentation.
Robert L on Sep 9, 2020
use it all the time
craig M on Sep 5, 2020
Going organic
Leonard H on Aug 28, 2020
Mead making w/ SNA.
Daniel R on Aug 26, 2020
Looking to restart a stalled mead
Daniel F on Aug 25, 2020
Fermentation Insurance
Ken J on Aug 25, 2020
used it before
Caleb S on Aug 24, 2020
same as above
Mike O on Aug 24, 2020
Try out
Luis H on Aug 20, 2020
It's a great product
Gregg O on Aug 20, 2020
some ofmy bold reds in foothills of El Dorado county are nitrogen starved 1/2 way through primary fermintaion. These helps those lacking red bold wines to complete dryness
Smits H on Aug 19, 2020
white wine
Judy P on Aug 15, 2020
Joe M on Aug 14, 2020
I need it
Anthony M on Aug 8, 2020
Jeffrey S on Aug 7, 2020
Based on what ive learned from online, videos, and group chatrooms for making mead/wine. This product was suggested.
Ryan G on Aug 7, 2020
Recipe called for
Matthew C on Aug 7, 2020
it is part of a recipe
Dennis H on Jul 23, 2020
Learned about it in BJCP Mead Judge class
Art Fitz F on Jul 22, 2020
First time trying, normally use k
Mark S on Jul 14, 2020
Best way to feed a mead fermentation
Louis LeBlanc on Jun 30, 2020
I am experimenting with yeast nutrients for hard seltzer.
Curtis T on Jun 28, 2020
recommended by morebeer
Dennis C on Jun 20, 2020
Use in mead making
Brandon P on Jun 13, 2020
New to
Marc F on Jun 6, 2020
Good product, good reviews, way to go!!
Paula LaRocca on Jun 1, 2020
Using yeast strains with higher nutrient requirements.
Susan Ingber on May 16, 2020
Need a new chain to kick-off fermentation
Stephen T on May 12, 2020
we prefer organic and reviews were good
Linda B on May 6, 2020
Wanted organic food for my mead
William F on May 4, 2020
better start
Robert W on Apr 23, 2020
Nutrition for mead
Tiffany m on Apr 22, 2020
Trying it out. Usually use Fermaid K and DAP.
Rudy Mead T on Apr 22, 2020
Stagger nutrient additions for mead using to TOSNA 3 method
Gregory L on Oct 20, 2020
Wanted yeast nutrient with no DAP
David M on Oct 15, 2020

4.9 / 5.0
10 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Good product
Good product! Recommended by the pros.
June 14, 2020
4 months ago
First time experience
I just used Fermaid O in a batch of Black Raspberry (which I grow) wine. I had a good but not foamy fermentation. Fermented down to SG 0.992. So, based on this one experience, I can recommend it, as it does it's job. Bigger tests for it as the harvest season approaches... Cheers!
August 10, 2018
over 2 years ago
Fermaid O
Thanks for the fast service! This nutrient did what was supposed to do! thanks!
July 6, 2018
over 2 years ago
Highly recommended for cleaner faster drinking mead with staggered nutrient additions
February 22, 2018
over 2 years ago
Working as expected so far
I'm using the Fermaid O as my sole nutrient in the mead. Way to early to judge how it will come out, but it seems to be fermenting as expected.
February 20, 2018
over 2 years ago
Great product. Does the job, and it’s organically derived.
January 31, 2018
over 2 years ago
fermaid o 120 g
product as described, fast shipping
January 28, 2018
over 2 years ago
Major Improved Mead Fermentation
This product has been the biggest improvement in my mead fermentations so far. I first used this with DAP but have recently moved to an all Fermaid O fermentation and my meads have never been this clean tasting so early. I cannot recommend this product enough.
January 24, 2018
over 2 years ago
Just what the doc ordered
This product does very thing it says it does. I would risk fermenting without it!

August 30, 2017
great product but beware...
Great product but keep it away from your cats! Two years in a row our cats have pulled this out of a box and gone nuts with it ripping the bag open and spreading it all over the place. It seems to have a more powerful draw than catnip.
October 11, 2016