The prohibitions take effect around late morning on the eve of Passover, or the 14th of the month of Nisan in the Jewish calendar.
Matzo or Matzah, unleavened cracker bread in Jewish cuisine regarding which "There are five grains that may not be used during Passover in any form except for Matzah"; see also Chametz
•
Chametz (section The five grains), leavened or leavenable grains and their flours in Jewish cuisine which are taboo during certain festival periods in Jewish tradition; see also Matzo
His song "Cuz I'm a Jew" (set to the tune of Johnny Cash's "I Walk the Line") includes the line, "Oh once a year I twirl a chicken over my head/ and it wouldn't be that bad if it were dead/ and there's a time when I go outside and burn my bread/ cause I'm a Jew I do that too.