Mario Costa Roero Arneis DOCG is a dry white wine from the Roero appellation in Piedmont, Italy, produced by Cantina Mario Costa. It is crafted from the Arneis grape, an ancient white variety indigenous to the Langhe and Roero hills of Piedmont, grown on sandy soils on the right bank of the Tanaro River.

This wine presents a pale straw-yellow color with greenish highlights. On the nose it offers delicate floral aromas of white peach, pear, and apricot, with hints of almonds and fresh herbs. The palate is dry, crisp, and medium-bodied with bright acidity, a soft texture, and a clean, slightly bitter finish typical of the Arneis variety. It is unoaked, preserving the grape's natural freshness and aromatic character.

Roero Arneis DOCG pairs well with light seafood dishes, shellfish, grilled fish, antipasti, and fresh cheeses. Serve chilled at 46–50°F. Each case contains 12 bottles of 750ml.