Egg foo young in the United States, at least as early as the 1930s, created a pancake filled with eggs, vegetables, and meat or seafood. In a U.S. regional variation, many American-Chinese restaurants in St. Louis, Missouri, serve what is called a St. Paul sandwich, which is an egg foo young patty served with mayonnaise, dill pickle, and sometimes lettuce and tomato between two slices of white bread. In the Netherlands, which has a local variation on the Chinese Indonesian cuisine, it is known as "Foe yong hai", and is usually served with a sweet tomato sauce. Strictly, according to "hai" in the
Secret ingredient the secret are usually required to sign non-disclosure agreements. Secret ingredient A secret ingredient is a component of a product that is closely guarded from public disclosure for competitive advantage. Sometimes the ingredient makes a noticeable difference in the way a product performs, looks or tastes; other times it is used for advertising puffery. Companies can go to elaborate lengths to maintain secrecy, repackaging ingredients in one location, partially mixing them in another and relabeling them for shipment to a third, and so on. Secret ingredients are normally not patented because that would result in publication, but they are protected