Mustard (condiment) mixed with horseradish and dried for storage, which were then exported to London and other parts of the country, and are even mentioned in William Shakespeare's play "King Henry the Fourth, Part II". The use of mustard as a hot dog condiment is said to have been first seen in the US at the 1904 St. Louis World's Fair, when the bright-yellow French's mustard was introduced by the R.T. French Company. Mustard is most often used at the table as a condiment on cold meats.It is also used as an ingredient in mayonnaise, vinaigrette, marinades, and barbecue sauce. It is
Forest Park (St. Louis) water lines installed during the fair remained for public use in the park. After the fair, thousands of trees were planted and vistas were created. In 1909, the fair's directors gave the balance of the remaining profits from the fair toward the construction of a monument to Thomas Jefferson, on the former site of the Fair's entry gates; when completed in 1913 it became the Missouri History Museum building. Other structures left from the fair include the Saint Louis Art Museum, the "Apotheosis of St. Louis" (a statue of French King Louis IX), the 1904 Bird Cage, (now a part