Field blend. Red: Sangiovese/Ciliegiolo/Colorino/Mammolo/Canaiolo/others. White: Malvasia/Malvasia Toscana/Trebbiano/Procanico/Nocchianello/more. The list of varieties--not even a complete one--tells the tale of this wine's name, Uva Matta or "crazy grapes". This tiny parcel was planted in 1923 on sandy marl soils at 500 meters in the hills around extinct volcano Monte Amiata (about 10 miles southeast of Montalcino). Fonterenza owns and farms it organically. The bunches are harvested and destemmed by hand, fermented spontaneously in an open plastic vat with a few days of maceration and aged for 14 months in a 500-hectoliter oak cask. The wine is bottled without filtration and with minimal sulfur. 2023 yielded a mere 600 bottles.