Yes, any flavoring, spice, coloring, or processing aid that is or bears one of the eight major food allergens must list the allergen in plain English. Processing aids are those items which help in the making of the food product but may not present a major ingredient. They are used, for example, to keep food from sticking to the baking pans or as a carrier for a certain flavor, spice or vitamin. Such a product might be soy lecithin or wheat starch.