When may a Napa wine be labeled as a Napa wine?

August 20, 2016 | By CALEB TROTTER

The federal Alcohol and Tobacco Tax and Trade Bureau (TTB) regulates the labeling of wines sold in interstate commerce. If a winemaker wants to label their wine using an “appellation of origin” from a recognized viticultural area like Napa, then the wine must meet certain requirements. These requirements include: 85 percent of the grap ...