Originally Posted by
TomA
No, but false advertising is still illegal in general. Saying a wine is from California when it is from Napa Valley is probably OK. Saying a wine is from Napa Valley when it is from somewhere else in California is probably not.
Interest to note the Mark West is a central valley winery (and not located in Sonoma County as the name might suggest). But wine labeling is by origin of the grapes, not where processed or bottled. When not 100% (or at least 75%) from a single area, there are separate labeling guidelines.
California Viticultural Areas