Servomyces is a biological nutrient containing inactive brewers yeast. Developed by a team scientists at TU Munich / Weihenstephan in conjunction with Lallemand, Servomyces is the most unique yeast nutrient available in brewing. This patented product is a biological substance produced without chemicals or additives. Though its specialised properties Servomyces improves yeasts ability to incorporate essential nutrients, especially zinc into its cellular structure. Recommended dosage 1-2 g/hl.