Salisbury steak is a dish made from a blend of ground beef and other ingredients, which is shaped to resemble a steak, and is usually served with gravy or brown sauce. Hamburg steak is a similar product, but differs in ingredients. Salisbury steak was invented by an American physician, Dr. J. H. Salisbury (1823–1905), an early proponent of a low-carbohydrate diet for weight loss; the term "Salisbury steak" has been in use in the United States since 1897. The dish is popular in the United States, where it is traditionally served with gravy and mashed potatoes or noodles.