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
Active ingredient as salicylic acid in willow bark or arecoline in areca nuts), because the word "ingredient" in many minds connotes a sense of human agency (that is, something that a person combines with other substances), whereas the natural products present in plants were not added by any human agency but rather occurred naturally ("a plant doesn't have ingredients"). In contrast with the active ingredients, the inactive ingredients are usually called excipients in pharmaceutical contexts. The main excipient that serves as a medium for conveying the active ingredient is usually called the vehicle. Petrolatum and mineral oil are common vehicles. The dosage