originally posted by Peter Creasey:
Per The Wine Spectator...
In the United States, the Alcohol and Tobacco Tax and Trade Bureau (TTB) regulates wine labels. The TTB rules state that for wines containing 14 percent or less alcohol by volume (ABV), the actual alcohol content can vary by plus or minus 1.5 percentage points. So, a wine labeled as containing 12 percent ABV could range from 10.5 percent to 13.5 percent.
For wines above 14 percent, the permitted variance is plus or minus 1 percentage point. Wineries are also permitted to state a range on their labels. For wines at 14 percent or less, the range can be up to 3 percentage points. For wines over 14 percent, the range can be up to 2 percentage points.
Of course, labeling requirements differ in other parts of the world. The European Union, for instance, requires that the “actual alcoholic strength” be printed on wine labels. That ABV must be accurate within 0.5 percent. (The E.U. allows a slightly higher variance of 0.8 percent for sparkling wines and wines that are bottle aged for at least three years before release.) ... PP.. . . . . . Pete