While it's usually spelled ketchup, you might see it on a few menus or grocery store bottles as "catsup" instead. Today, catsup and ketchup are one in the same, but the term catsup was actually ...

Władysław Kopaliński in his ‘Słownik Wyrazów Obcych’ (Dictionary of Foreign Words) lists a few variations of this sauce’s name: ‘catsup’, ‘catchup’, ‘katsup’ and the now common ketchup. They are ...