Coeliac disease By January 2004, extremely low-gluten Church-approved hosts had become available in the United States, Italy and Australia. As of July 2017, the Vatican still outlawed the use of gluten-free bread for Holy Communion. The Jewish festival of Pesach (Passover) may present problems with its obligation to eat matzo, which is unleavened bread made in a strictly controlled manner from wheat, barley, spelt, oats, or rye. This rules out many other grains that are normally used as substitutes for people with gluten sensitivity, especially for Ashkenazi Jews, who also avoid rice. Many kosher-for-Passover products avoid grains altogether and are therefore gluten-free.
Maror two biblical reference to the "maror" is the verse quoted above (Exodus 12:8) in which it is mentioned in reference to the offering, and in Numbers 9:11 where "They are to eat the lamb, together with the unleavened bread and bitter herbs". This is in contradistinction to the obligation to consume "matzo" on the first night of Passover, which remains a biblical commandment even in the absence of the Paschal Lamb, because there are other biblical verses that mention "matzo" as a standalone obligation (Exodus 12:18, Deuteronomy 16:8) The word derives from the Hebrew word "mar" (מֵר or מָרָה —