Fermaid K

Fermaid K

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Smart brewers know that a yeast starter is the best way to ensure proper cell count and yeast viability prior to pitching. If you want a reliable starter for your batch of beer, you need to feed the yeast. Adding a yeast nutrient to the starter will give the yeast an added boost! Fermaid K is a yeast nutrient that works for starters and main fermentation. Here’s how it works:

Fermaid K is a complex formula that provides DAP, free amino acids, yeast hulls, unsaturated fatty acids, sterols; and micronutrients such as magnesium sulfate, thiamin, folic acid, biotin, calcium pantothenate, and other vitamins and minerals. Yeast use Nitrogen for protein synthesis and to maintain cellular growth. Nitrogen from the alpha amino acids contained in Fermaid K is utilized much more efficiently than from the ammonia salts like DAP. The unsaturated fatty acids and sterols available in Fermaid K are important survival factors needed to maintain alcohol resistance. They also help keep volatile acidity levels low. The cell wall fractions, available through the included yeast hulls, absorb medium chain fatty acids that are toxic to the yeast. They also provide nucleation sites to help keep the yeast in suspension. You do not need to add any additional fertilizers or DAP when adding Fermaid K. Use approximately 1 gram per gallon. Rehydrate in distilled water.
A rough approximate of weight is 1 tsp = 4.7 grams. We highly recommend using a scale to weigh the product for an accurate dose.

Like Fermaid K? Then you will love CellarScience® FermFed Yeast Nutrient!



Community Q&A

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Why did you choose this?
MoreFlavor Store
I have used it in the past.
Shari J on Sep 16, 2021
Getting back into wine and mead
WILLIAM POLSKOY on Sep 13, 2021
I have used it in the past.
Shari J on Sep 16, 2021
Jake H on Sep 16, 2021
Getting back into wine and mead
WILLIAM POLSKOY on Sep 13, 2021
Worked great last year for my Lodi AVA Petite Sirah & Cab Sauv
All Things Rocketry on Sep 9, 2021
i add it to help fermantation
maurice m on Sep 9, 2021
Cannot make mead without YAN
Kenneth Hesser on Sep 7, 2021
used it before
Sal V on Sep 4, 2021
Good for Primary regiment
Jerry P on Sep 4, 2021
speeds the fermentation
Salvatore B on Sep 4, 2021
for activity fermentation
Valued C on Sep 4, 2021
Used before
Scott B on Sep 3, 2021
Fermaid O does not keep up with the needs of nutrient deficient California grapes!
Paul T on Sep 2, 2021
Used last year
Thomas L on Aug 28, 2021
It's necessary
Michael B on Aug 18, 2021
Great results
Jennifer B on Aug 14, 2021
recommended from supplier
Ethan B on Aug 13, 2021
easy to use
Anthoula R on Aug 12, 2021
this is a reliable nutrient for my fermentations
Valued C on Aug 11, 2021
Running low
Mike K on Aug 11, 2021
yeast food for fast, full fementation
Dwight K on Aug 11, 2021
came with kit last year,need for this year, worked well!
Frances B on Aug 10, 2021
Online recommendations from wine blog
Douglas S on Aug 4, 2021
i always use it
Michael C on Jul 22, 2021
nutrients yep
Christopher N B on Jul 22, 2021
Keeps the yeast happy
Robert R on Jul 12, 2021
Recommended by winery
Paul A on Jun 21, 2021
I have used it in the past, and I like the way it works!
Donald B on Jun 15, 2021
Yeast got to eat
Jason Van D on Jun 10, 2021
used before
Pamela S on Jun 1, 2021
To get a good quantity of yeast nutrient for healthy beer
gavin g on May 27, 2021
For yeast nutrition
MIKE W on May 19, 2021
A group who makes mead tell me this is all important.
Brandt B on May 15, 2021
Seems to be industry standard for low nutirient ferments.
Daniel S. on May 12, 2021
works well
Ed C on May 3, 2021
i need this for my brew
Javier C on Apr 27, 2021
yeast nutrient for hard seltzer
Skip C on Apr 20, 2021
For making yeast starters
Michael R on Apr 19, 2021
Only nutrient you need, besides Fermaid O
Adam C on Mar 29, 2021
Nutrition yeast
Habib R on Mar 16, 2021
help start ferment
rick s on Mar 10, 2021
Irma U on Mar 9, 2021
Matt said so
Corey G on Mar 5, 2021
for mead
Gustavo Sanchez V on Feb 13, 2021
I need it for my RO water
Joe M on Feb 2, 2021
kyle a on Jan 29, 2021
aid starter
Chris M on Jan 15, 2021
I have always preferred Fermaid K over the others
Adam B on Jan 13, 2021
mead maker - i read that this is a nice blend of organic and non organic
Chad M on Jan 6, 2021
Used before
Mandar M on Dec 28, 2020
recommended in description
Francis D on Dec 24, 2020
Jake H on Sep 16, 2021
Worked great last year for my Lodi AVA Petite Sirah & Cab Sauv
All Things Rocketry on Sep 9, 2021
Is the amount of Fermaid K that you add to the wine must directly correlated to YAN?
Peter M. Christie on Jan 25, 2021

4.7 / 5.0
9 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Rated 5 out of 5
Great yeast food!
High quality product. Clean and works as described.
August 7, 2021
2 months ago
Rated 5 out of 5
great stuff...can't imagine starting a fermentation without it
November 12, 2020
11 months ago
Rated 4 out of 5
Great for starting fruit wines. I like this better than Go Ferm but I have used them both together. Go Ferm is rather nasty to mix and smelly and I try to avoid using too many chemicals.
September 21, 2020
over 2 years ago
Rated 5 out of 5
Good for high brick, and yeasts with high nitrogen needs.
September 7, 2020
1 year ago
Rated 4 out of 5
Good food for the yeast, a little goes a long way.
This was my first time using this. Used for 3 batches of beer. Seems to help. However, as it is recommend to be added when 1/3 of the sugar content happens, that's a bit hard to estimate. Otherwise, good stuff.
June 27, 2020
1 year ago
Rated 4 out of 5
Overall excellent product. Would be even better if the smaller quantities came in a resealable vial or bag.
February 25, 2020
1 year ago
Rated 5 out of 5
Great yeast booster!
I added 1/2 the amount of Fermaid K once Fermentation started and the other 1/2 at 5 brix.
October 14, 2019
over 2 years ago
Rated 5 out of 5
Great Nutrient
Great yeast nutrient. Just follow the schedule found in the "More Manuals" section of this site and you can't go wrong.
September 30, 2019
over 2 years ago
Rated 5 out of 5
Fermaid K
I've been using Fermaid K for years to supplement the yeast in all of my wines and it appears to help get my wines dry, normally to between -1.5 to -2 brix.
July 20, 2019
over 2 years ago