Sulfite is a chemical compound that contains sulfur and oxygen, often used as a preservative in food and beverages. It helps prevent spoilage and maintains freshness by inhibiting the growth of bacteria and fungi. You might find sulfites in products like dried fruits, wine, and some processed foods. However, some people are sensitive to sulfites and may experience allergic reactions. In the world of winemaking, sulfites play a crucial role. They are added to wine to protect it from oxidation and to preserve its flavor. While sulfites are generally recognized as safe, it's important for consumers to check labels, especially if they have sensitivities.