Noun
chametz (uncountable)
(Judaism) Food products made from leavened grain flour, which may not be consumed on Passover in Judaism.
After the matzos come out of the oven, the entire work area is scrubbed down and swept to make sure that no pieces of old, potentially leavened dough remain, as any stray pieces are now chametz, and can contaminate the next batch of matzo. Source: Internet
Because the house is assumed to have been thoroughly cleaned by the night before Passover, there is some concern that making a blessing over the search for chametz will be in vain (bracha l'vatala) if nothing is found. Source: Internet
Homes are thoroughly cleaned to ensure no bread or bread by-products remain, and a symbolic burning of the last vestiges of chametz is conducted on the morning of the Seder. Source: Internet
Blessing for search of chametz and nullification of chametz Before the search is begun there is a special blessing. Source: Internet
Heschel felt that to put bread on the seder plate would be to accept that Jewish lesbians and gay men violate Judaism like chametz violates Passover. Source: Internet
In particular, a formal search for remaining chametz is done during the evening of Erev Pesach, and all remaining chametz is finally destroyed, disposed of or nullified during the morning of Erev Pesach. Source: Internet