A white grape variety cultivated almost exclusively in Piedmont. Compared to most wine grapes it has a low acid content, and it was once used to soften the mightily tannic red Nebbiolo. It is occasionally called "Barolo Bianco" by acolytes. Unlike red Barolos, however, wines made from the Arneis grape nowadays are usually meant to be consumed while quite young. They are typically dry and exquisitely perfumed.