Sulfites in Wine: A Debate to Cause a Headache?

By Natalie MacLean What’s the big deal about sulfites in wine? Most wine labels bear the warning “contains sulfites” (or sulphites, the Canadian and British spelling), which can alarm consumers into thinking that the substance is harmful or unhealthy. In fact, sulfites, the salts of sulfurous acid or sulfur dioxide (SO2), are just a common food preservative that prevents the wine from oxidizing after fermentation (it turns brown and the fruit aromas go stale) or spoiling from bacteria once bottled. Traditionally, in Europe no warning label was required if there was less than 100 parts per million of sulfites added, […]

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