A matzah is made using only specially supervised (yeast free) wheat and water. It is then baked precisely eighteen minutes (the number symbolizing life).
One aspect of unleavened bread that has particular occult symbolism is the afikoman. The afikoman is one-half of a matzah wafer that is publicly broken, only to be hidden away during the Seder. Children must then find it or steal it from the holder in order for the Seder to continue. Originally intended as a pedagogical tool to keep the attention of children during the ceremony, by the Middle Ages the afikoman started to be used as an amulet against the Evil Eye. Customs include preserving a piece at home for good luck, while some people may actually carry crumbs of the afikoman in their coat pockets. Pregnant women will sometimes keep a piece of afikoman nearby to ensure an easy labor. According to one tradition, an afikoman kept seven years can avert a flood or other natural disaster.