Fermaid K

Fermaid K

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A complex formula that provides DAP, free amino acids, yeast hulls, unsaturared 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. 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. Fermaid K is normally used in conjunction with GO-Ferm and added to the fermenting wine after 1/3 sugar depletion. Our Winemaking consultant Shea Comfort uses the analogy of a marathon to describe when to use nutrients. GO-Ferm is the snack before the race and Fermaid K is the mid-race power bar that gets your yeast through a healthy, problem-free ferment. It is a formula used by hundreds of commercial wineries. 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. We do not recommend relying on these rough conversions for accurate dosage rates.

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
Jeff S on Aug 7, 2020
Need strong yeast for high ABV beer.
Edward T on Aug 4, 2020
Jeff S on Aug 7, 2020
Great yeast nutrient
Tom B on Aug 5, 2020
Need strong yeast for high ABV beer.
Edward T on Aug 4, 2020
Seems like a good deal
Leif l on Jul 30, 2020
Ben J on Jul 24, 2020
yeast starter
Ethan M on Jul 22, 2020
Valued C on Jul 20, 2020
To provide nutrition during fermentation.
Rich L on Jul 17, 2020
making a honey mead
Tony D on Jul 12, 2020
I get excited when my mead must foams up after adding this
Vance B on Jul 9, 2020
Jeremy H on Jun 18, 2020
not for beer, for mead making
Michael S on Jun 16, 2020
John H on Jun 11, 2020
Research recommended
Edee Belanger on Jun 7, 2020
leonard c. todd,jr on Jun 3, 2020
Decent price. I want to see how adding yeast nutrient changes my next batch of cider.
Courtney Christensen on May 28, 2020
Better fermentation so wine isn't too sweet.
James S on May 26, 2020
Michael B on May 22, 2020
helps fermentation
Jeff L on May 19, 2020
Nutrient blend for homebrewing mead.
John Y on May 13, 2020
Needed some for my starter
David F on May 12, 2020
Best overall yeast food
Phillip R on May 8, 2020
It is a good nutrient and one I have had success with in the past
Richard R on May 7, 2020
I want my yeast to just go off
Nathan F on May 7, 2020
I am getting into meads.
Jon on May 4, 2020
Make beer and hard liquor
Valued C on May 1, 2020
inventory low
Mark O on Apr 23, 2020
Have used before
Robert C on Apr 21, 2020
My local brew store lacks this and DAP, which I need for mead.
Jamie G on Apr 7, 2020
Making seltzer
CHARLES A. B on Apr 1, 2020
Tom N on Mar 27, 2020
Yeast lives matter!
Daniel Z on Mar 21, 2020
Making mead and read this product is the way to go.
Steve M on Mar 17, 2020
i like yeast health!
Chris O on Mar 16, 2020
running low
Thor E on Mar 5, 2020
Gotsta treat my yeast right!
Wendell D on Mar 3, 2020
Tom e on Mar 3, 2020
I always have used during ferments
Glen Kusko on Mar 2, 2020
yeast boost
Patrick R on Feb 29, 2020
For yeast starter
Joe N on Feb 24, 2020
High gravity mead, need more than 5g, but not 500
Kyle M on Feb 19, 2020
master brewer told me too
Edwin K on Feb 17, 2020
making meads
Jose A on Jan 27, 2020
Tracy J F on Jan 17, 2020
Yeast requirement
Douglass on Jan 15, 2020
Keep yeast happy
Devin B on Jan 14, 2020
for making yeast starter
Hyungsoo K on Jan 10, 2020
Combined with red star yeast, guaranteed flawless fermentation.
Yin Min Htun on Jan 9, 2020
To help ferment big beers
Dmitry B on Jan 7, 2020
Hi gravity brews
steven e on Jan 6, 2020
Great yeast nutrient
Tom B on Aug 5, 2020
Seems like a good deal
Leif l on Jul 30, 2020

4.6 / 5.0
5 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
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
2 months ago
Overall excellent product. Would be even better if the smaller quantities came in a resealable vial or bag.
February 25, 2020
5 months ago
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
11 months ago
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
11 months ago
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
1 year ago