Easy to peel 1¿ round sulphur dioxide allergen label, used to highlight food stuffs containing sulphur dioxide. People with food allergies need to know what is contained within their food, and as of December 13th, 2014, it has become legislation that if any of the fourteen food allergens on the regulatory list are an ingredient of packaged or loose foods, they must be highlighted. Sulphur dioxide is often used in foods such as raisins, dried apricots and prunes. Additionally, it may also be present in beer, wine and soft drinks.