Beef Stroganoff or Beef Stroganov is a Russian dish, named after one of the members of the influential Stroganov family, of sautéed pieces of beef served in a sauce with sour cream (smetana). From its origins in mid 19th century Russia, it has become popular around the world with considerable variations from the original recipe. Beef Stroganoff preparation varies significantly not only based on geography, but based on other factors as well, such as the cut of meat and seasonings selected. Meat for the dish can be cut in different ways and is sometimes diced, cubed, or cut into strips. Some variations include mushrooms and onions or other vegetables and varied seasonings such as sugar, salt, black pepper, and bottled marinades, especially Worcestershire sauce, and rubs. In the version often prepared in the United States today it consists of strips of beef filet with a mushroom, onion, and sour cream sauce, and is served over rice or noodles.