(WineSpectator) - A fight over labeling leaves American producers at odds over the meaning of organic, even as the European Union allows added sulfites.What is the difference between certified “organic” wine and wine “made with organic grapes” in the United States? As far as the contents, added sulfites—up to 100 parts per million, or 1/2000th of an ounce in a glass—and that’s it. But on the label, only the former can display the easy-to-understand, green USDA Organic seal that helps producers attract customers seeking “green” products. The distinction has sparked a battle between winemakers over what organic wine should be.