Matzo "Matzot Mitzvah" (the Shĕmurah matzo eaten during Passover) to a Kohen child to eat. "Egg (sometimes "enriched") matzo" are matzot usually made with fruit juice, often grape or apple juice instead of water, but not necessarily with eggs themselves. There is a custom among some Ashkenazi Jews not to eat them during Passover, except for the elderly, infirm, or children, who cannot digest plain matzo; these matzot are considered to be kosher for Passover if prepared otherwise properly. The issue of whether egg matzo is allowed for Passover comes down to whether there is a difference between the various liquids
Matzo for the Eucharist are flat, unleavened bread. The main reason for the use of this bread is the belief, that because the last supper was described in the Synoptic Gospels as a passover meal, the unleavened matzo bread was used by Jesus when he held it up and said "this is my body". All Byzantine Rite churches use leavened bread for the Eucharist as this symbolizes the risen Christ. Some Oriental Orthodox and Eastern Catholic Christians use leavened bread, as in the east there is the tradition, based upon the gospel of John, that leavened bread was on the table