Matzo must be ground from one of the five grains specified in Jewish law for Passover matzo: wheat, barley, spelt, rye or oat. Per Ashkenazic tradition, matzo made with wine, fruit juice, onion, garlic, etc., is not acceptable for use at any time during the Passover festival except by the elderly or unwell. Matzo dough is quickly mixed and rolled out without an autolyse step as used for leavened breads. Most forms are pricked with a fork or a similar tool to keep the finished product from puffing up, and the resulting flat piece of dough is cooked at high temperature
Ancient Israelite cuisine wafers ("rekikim") smeared with oil baked in an oven. There were also baked goods, all made of wheat flour and baked in an oven, which were not burned on the altar. These were the twelve unleavened and specially shaped showbreads, eaten by the priests after they had been displayed; two loaves of leavened bread prepared for the festival of Shavuot and eaten by the priests; thanksgiving breads, which included leavened bread, unleavened bread, unleavened wafers and scalded loaves, with one of each kind given to the priests and the remainder eaten by the owner and guests; and the unleavened loaves