Sulfites: Headaches & Salad Bars! By Jimmy Quaile, Certified Sommelier First, a little background: Sulphur dioxide (aka, Sulfites) is a chemical compound made up of sulfur and oxygen. It occurs naturally but can also be produced in a laboratory. Measured in parts per million (ppm), it has been used for thousands of years as an antioxidant and antimicrobial to preserve foods and beverages. As far back as the 8th Century BC, ancient Greeks who used sulfur
Sulfites: Headaches & Salad Bars!
