Marco de Bartoli operates in Terre Siciliane, Southern Italy's expansive wine region, where Mediterranean heat and varied terroirs shape distinctive white wines. The winery focuses on indigenous Sicilian grapes: Grillo and Zibibbo, varieties that thrive in the island's warm climate and produce wines of natural richness and character. Integer Grillo, a dry expression of Grillo, and Vigna la Miccia Liquoroso, a fortified Grillo wine, represent the winery's work with this versatile variety. Integer Zibibbo, made from the Zibibbo grape, rounds out the portfolio. These wines have been assessed by major critics including Decanter, Wine Spectator, Wine Enthusiast, and Falstaff, reflecting their standing within the international wine press. The winery's approach centers on Sicily's native grapes and the particular conditions of the Terre Siciliane appellation.