Does beer contain sulfites?
Small amounts of sulfite are produced in the fermentation of alcoholic beverages. Most breweries have limits on the amount of sulfite that can be present in the beer. The sulfite could be added as a preservative in some rare cases, or simply be a byproduct of the fermentation. The Food and Drug Administration in the United States requires any beverage which has more than 10 parts per million (ppm) to include a warning on the label. I have not seen many beers with a “Contains Sulfites” warning on the label, so most beers should be below 10 ppm. German beers will not have sulfites added, but the beers may still contain some sulfites from fermentation.
