reactions to cognac
Cognac is distilled so it doesn't have, or need sulfites to preserve it. All wine has sulphites, especially white wine, but the more acidic the wine, the lower the level of sulphites needed to preserve it. The human body naturally produces about 1000 mg of sulphites a day. Also yeast produces sulfites during fermentation. Any sulphites produced by yeast evaporate during distillation. About 1 in 100 people have a small reaction to sulphites and 5% of those may have a severe reaction with asthma or anaphalactic shock. The rumor that sulfites in red wine cause headaches is untrue. There is something in red wine that causes headaches for some people, but the cause has not been found yet.