Of all the symbolic foods on the Passover Seder table, matzoh is the most important. Made without yeast and quickly baked, matzoh reminds Seder participants of the Jews fleeing Egypt who had no time to leaven their bread or bake it properly. Flour used to make matzoh is made from wheat that is “watched” from the moment of harvesting to ensure it never contacts any water, which might cause the flour to expand and rise.