Viniflora FrootZen is a pure strain of yeast Pichia kluyveri strengthening the fruity characteristics of the wine and ensuring bio-protection. FrootZenâ„¢ can be used at several stages of the process as a pre-fermentation product (on harvested grapes, on crushed grapes, or in must). The culture is recommended when making white and rosé but can also be used in red wines. The product is delivered in a user-friendly freeze-dried format.