Unleavened bread Unleavened bread Unleavened bread is any of a wide variety of breads which are not prepared with raising agents such as yeast. Unleavened breads are generally flat breads; however, not all flat breads are unleavened. Unleavened breads, such as the tortilla and roti, are staple foods in Central America and South Asia, respectively. Unleavened breads have symbolic importance in Judaism and Christianity. Jews consume unleavened breads such as matzo during Passover - various traditions explain this usage. Unleavened bread also features in some Western Christian liturgies during the Eucharist, a rite derived from the Last Supper when Jesus broke bread,
Matzo on the first night of Passover. ("Shĕmura" wheat may be formed into either handmade or machine-made matzo, while non-"shĕmura" wheat is only used for machine-made matzo. It is possible to hand-bake matzo in "shĕmura" style from non-shmurah flour—this is a matter of style, it is not actually in any way "shĕmura"—but such matzo has rarely been produced since the introduction of machine-made matzo.) Haredi Judaism is scrupulous about the supervision of matzo and have the custom of baking their own or at least participating in some stage of the baking process. Rabbi Haim Halberstam of Sanz ruled that machine-made matzo