What is grape sulphate?

Grape sulphate, commonly referred to as potassium metabisulfite or sodium metabisulfite, is a chemical compound often used in winemaking and food preservation. It acts as an antioxidant and antimicrobial agent, helping to prevent spoilage and oxidation in wines and other products. Additionally, it is used to clarify and stabilize wine, enhancing its overall quality. However, some individuals may be sensitive to sulfites, leading to allergic reactions.