90% Nerello Mascalese/10% other local varieties. "Arenaria", from the Arenaria contrada, was Acosta's first wine from outside Mt. Etna' volcanic terroir. It comes from a half-hectare parcel of 70-plus-year-old vines in Castiglione, just outside of Etna, on Mt. Portella at 700 meters. The north-facing vineyard is a mixed planting of various indigenous white and red varieties. The farming is organic. Nerello Mascalese is the main red, with Nerello Cappuccio, Alicante and Garnacha; the whites include Minnella, Catarratto, Grecanico and Inzolia. The terre bianche soils are sedimentary, from sandstone and marl (arenaria in Italian) with clay and quartz.

The bunches are hand-harvested, vinified as a mix of whole clusters and destemmed berries, co-fermented spontaneously with native yeasts and without sulfur or temperature control in concrete tank. Maceration lasts around 15 days. The wine is aged for 11 months in a combination of concrete tank and tonneau with minimal racking. It is bottled without fining or filtration and with a tiny amount of sulfur.