One example is the Papal Bull Cantate Domino.  It certainly contains an ex cathedra statement.  You just don't seem to understand what constitutes an ex cathedra statement, nor what a dogma actually is.
You demonstrate a complete ignorance of the Council of Trent and the decrees stemming from it.
You also illustrate a complete ignorance of the traditional Seder meal - from the time of Christ and the Apostles.