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.
Matzo Whole wheat, bran and organic matzo are also available. Chocolate-covered matzo is a favorite among children, although some consider it "enriched matzo" and will not eat it during the Passover holiday. A quite different flat confection of chocolate and nuts that resembles matzo is sometimes called "chocolate matzo". Matzo contains typically 111 calories per 1-ounce/28g (USDA Nutrient Database), about the same as rye crispbread. "Shĕmura" ("guarded") matzo ( "matsa shĕmura") is made from grain that has been under special supervision from the time it was harvested to ensure that no fermentation has occurred, and that it is suitable for eating