HANNA Yeast microscan:

Twenty five to 35% of our Sauvignon Blanc is fermented without inoculation each year; inevitably, these tend to be our favorite lots. Last year, we had a non-inoculated tank that was so outstanding that we now maintain a proprietary strain. We currently have a 12,000 gallon tank of Slusser SB smelling of peaches and passionfruit, thanks to beautifully ripened grapes and the HANNA Yeast!