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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Browse 3 questions Browse 3 questions and 56 answers
Why did you choose this?
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es bueno
got to have a good ferment
PAUL P on Jul 26, 2022
es bueno
Continues a good nutrient stream
Alvin B on Jul 27, 2022
got to have a good ferment
PAUL P on Jul 26, 2022
My standard procedure making mead
Wanna make mead
Tanner A on Jul 14, 2022
Making mead
Alan B on Jul 13, 2022
Recommended and I like to grow my yeast
Dave H on Jul 13, 2022
Diane Rudnick on Jul 8, 2022
Used for 10+years
Rich R on Jul 6, 2022
Never used before
Steve A on Jun 28, 2022
I've used before
Michael G on Jun 27, 2022
I get a higher % of alcohol and a drier wine when I use this.
Jeremy F on Jun 23, 2022
Just want to help out the yeast a little.
Christopher Murray on Jun 10, 2022
I use Fermaid O and Fermaid K in every batch of mead
Matt A on Jun 6, 2022
intermittent feeding
Tanya A on Jun 3, 2022
Francisco M on May 27, 2022
Mead Nutrients
Keegan G on May 19, 2022
Excellent product to produce our wine
complete fermentation
Jon T on Apr 13, 2022
Yeast nutrient
Melissa E on Apr 8, 2022
Want my beer stronger
Michael C on Apr 6, 2022
Mead brewer / Mazer. Helps with healthy inoculation.
kristoffer f on Apr 4, 2022
It was recommended to me by a seasoned home wine maker
Dylan L on Apr 4, 2022
Better beer
Mark H on Mar 31, 2022
stable fermentation
Carl on Mar 15, 2022
For Meade
Larry E J on Mar 4, 2022
for my yeast starter
David Fullen on Feb 11, 2022
for mead
Richard C on Feb 4, 2022
My yeast seems to enjoy it
Alexandre A on Feb 4, 2022
Helps the yeast reproduce
Robert L on Feb 1, 2022
Making mead
Tomas M on Feb 1, 2022
Starting my yeast starter lab.
Fernando S on Jan 22, 2022
Denis C on Jan 10, 2022
Recipe in BYO recommended this for Mead
D S on Dec 7, 2021
To give my yeist nutrients
Brittainy C P on Nov 24, 2021
To ensure my yeast doesn’t die mid-ferment
Dustin J on Nov 19, 2021
healthy yeast == healthy fermentation
Trevor Mack on Nov 17, 2021
Valued C on Oct 30, 2021
Gotta Get it right
Jeremy M on Oct 26, 2021
good nutrient with reduced price from bulk purchase
Ethan B on Oct 26, 2021
Ran out
Roberta I on Oct 21, 2021
I'm almost out and still have lots of wine fermenting
Frederick Carbone on Oct 16, 2021
Same as above and I’ve never had a stuck fermentation since I started using this.
Mark on Oct 16, 2021
order it every year
Douglas K on Oct 8, 2021
This works for us
Peter L on Oct 8, 2021
to use in wine making
ROBERT R. on Sep 30, 2021
1st time winemaker - first batch of nutrients/supplies
Rory C on Sep 28, 2021
Patti Dittman on Sep 24, 2021
Need it for fermentation
David V on Sep 22, 2021
to help yeast along with ml fermentation
Charles M on Sep 22, 2021
Continues a good nutrient stream
Alvin B on Jul 27, 2022
My standard procedure making mead
Use approximately 1 gram Fermaid K per gallon of what? Must or projected juice?
Karen Wall on Oct 8, 2021
BEST ANSWER: We recommend one gram per gallon of must.
Is the amount of Fermaid K that you add to the wine must directly correlated to YAN?
Peter M. Christie on Jan 25, 2021

4.5 / 5.0
12 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Rated 2 out of 5
It's not bad, but I won't use it again. I gave it two stars because it is what I ordered and it arrived quickly, but I'm not impressed with the results.
June 15, 2022
2 months ago
Rated 5 out of 5
always works great ...........
October 6, 2021
10 months ago
Rated 5 out of 5
Fermaid K in the yeast starter for Red Wine.
A good healthy active yeast starter is essential to ensure as short a lag time as possible. Even though the must was at 68 degrees my roaring starter had the airlock bubbling at 4 hrs. This gives me peace of mind after tending the vineyard all year long.
October 3, 2021
10 months ago
Rated 5 out of 5
Great yeast food!
High quality product. Clean and works as described.
August 7, 2021
1 year ago
Rated 5 out of 5
great stuff...can't imagine starting a fermentation without it
November 12, 2020
1 year 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
over 2 years 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
over 2 years 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