Adding to the confusion, “Napa” can reference a city, a county and a valley. Same goes for Sonoma. Then there’s the grape-growing regions, called American Viticultural Areas, or AVAs, to contend with.

Sonoma County Grants Approval for Kutch Wines’ Future Estate Winery and Tasting Room in Sebastopol Sebastopol, California – ...

Winemakers in California are hopeful they can convince more Americans to drink local, put off by the price tags on French and ...