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
St. Louis Exposition and Music Hall St. Louis Exposition and Music Hall St. Louis Exposition and Music Hall was an indoor exposition hall, Music Hall and arena in St. Louis, Missouri from 1883 to 1907. Three national presidential nominating conventions were held in three separate buildings in or near the complex between 1888 and 1904 including the 1888 Democratic National Convention, 1896 Republican National Convention, and 1904 Democratic National Convention. In addition to the 1904 Democratic convention, it was used as a large venue for other conventions and congresses during the 1904 World's Fair. The exposition hall was built initially at a cost of US$750,000. It