But a USDA-certified organic wine does not have sulfites. A problem with USDA-certified organic wines Now that we understand ...

Sulfites are chemicals used as preservatives ... “There are many examples of successful wines made without sulfur, but also others that could be improved by a small addition,” he says.

Sulfites: Winemakers all over the world use sulfur dioxide to clean equipment, kill unwanted organisms on the grapes and protect wines from spoilage. A tiny amount remains in the bottle, and U.S.