VIVACTIV^® ECORCE (yeast hulls) adsorb different alcoholic fermentation inhibitors, allowing for must detoxification and yeast growth. Additionally, they release sterols and unsaturated fatty acids that improve alcoholic fermentations. These hulls result from plasmolysis of a specific Saccharomyces cerevisiae strain. The cell walls are obtained by centrifugation and then washed following an innovative method that limits the risks of yeast aromas.