A multi-nutrient complex combining everything necessary for a secure fermentation process. Comes from yeast cells produced according to the F3-Erbslöh-yeast production process. These cells are subsequently inactivated. Also particularly valuable and important nutrients such as amino acids, peptides, special fermentation co-factors, manoproteins, other adsorptive polymers as well as yeast vitamins, unsaturated fatty acids and sterols are released. Diammonium phosphate and thiamin form the additional nutrient framework.