The term SEDER STAPLE refers to three items that are traditionally eaten during the Jewish Passover Seder. The first is MATZO, a type of unleavened bread made from flour and water. The second is MATZOH, which is similar to Matzo but is made with a different process. Finally, UNLEAVENEDBREAD is a type of bread made without yeast or other leavening agents. All three of these items are staples of the Passover Seder and are eaten as part of the traditional meal.