For most people, celebrations are fun events. But for parents of food allergic children, or even for food allergic adults, activities involving food can be filled with worry over coming into contact with a food allergen. Allergies are the result of a reaction that starts in the immune system. When you are allergic to a food your immune system identifies a protein found in it as an allergen. Then the immune system reacts by producing antibodies called Immunoglobulin E (IgE). These antibodies attach to cells in your skin, lungs, and gastrointestinal tract and if you come in contact with the allergen again, the cells release chemicals including histamine which causes anaphylaxis.