60% Pecorino (from 30 year old vines), 30% Chardonnay (from 90 year old vines!), and 10% other white varieties; all certified biodynamic. The bunches are partly destemmed and partly left in whole clusters, macerated for a few hours, pressed in an old-school vertical pressoir and then fermented with native yeasts and no temperature control in tank. The wine is aged in concrete tanks--hence the very literal name--for 6-7 months and bottled without fining or flitering or sulfur (used judiciously at racking only. Think apple, fresh almonds, notes of citrus, and wisp of fennel fronds with a salty twist to the palate. This is very savory, with just the right hint of grip, good texture, and a lengthy, fresh finish. Serve alongside firm cheeses and charcuterie.