Tornasole is named after the litmus paper used to measure acidity. The wine was born from the idea of using a great international grape variety to showcase the strong Piedmont territorial imprint. It's 100% Merlot from 25-year-old vines. It undergoes 40-60 days of skin contact with native yeasts, spontaneous fermentation, 12 months of ageing in steel tanks and oak barrels, and 8 years in bottles. Around 6000 bottles are produced annually.