What is Servomyces? Servomyces is yeast that is propagated in a micronutrient rich environment then, and is killed off prior to packaging. The benefit of Servomyces is that micronutrients, for example zinc, are able to pass through its cell walls to your live yeast cell, thereby delivering the micronutrients without toxicity. Servomyces is GMO free and was originally developed for German brewers by Weihenstephan and the Munich University.
Servomyces enables any yeast strain's ability to incorporate essential nutrients into its cellular structure. Tested in breweries around the world, it has been proven to: cut down fermentation time, increase flocculation, reduce harsh sulfur notes, improve the health and viability of yeast, reduce levels of diacetyl at the end of primary fermentation and produce faster, more complete attenuations (for lower final gravities).
In our tests we have found Servomyces to produce a larger krausen (head) during the initial ferment than a control batch without Servomyces, and may improve flavor (although we have only done one test, and it is not conclusive). We also found that the final gravity of our Belgian Triple with and without Servomyces was identical, although blind taste testers preferred the flavor of the Triple with Servomyces. Again, this was just one test batch, and we cannot really call it conclusive. This pack of 6 capsules is good for 6 five gallon batches of beer.
I've used this for years. For me it works better than yeast nutrient, this is kinda like steroids for yeast. Not particularly cheap but well worth it.
helps the yeast
This is a good product that supposedly gets the yeast go into drive with nutrients.
Cheap insurance to make sure you don't end up with a stuck fermentation. Great stuff!