Matzo

Matzo, matza or matzah (Yiddish:‎ מצה Hebrew:מַצָּה‎; plural matzot; matzos, matzus of Ashkenazi Hebrew dialect) is an unleavened flatbread that is part of Jewish cuisine and forms an integral element of the Passover festival, during which chametz (leaven and five grains that, per Jewish Law, can be leavened) is forbidden.