among the Jews was generally made of wheat (Ex. 29:2; Judg. 6:19), though also sometimes of other grains (Gen. 14:18; Judg. 7:13). Parched grain was sometimes used for food without any other preparation (Ruth 2:14).
Bread was prepared by kneading in wooden bowls or "kneading troughs" (Gen. 18:6; Ex. 12:34; Jer. 7:18). The dough was mixed with leaven and made into thin cakes, round or oval, and then baked. The bread eaten at the Passover was always unleavened (Ex. 12:15-20; Deut. 16:3). In the towns there were public ovens, which were much made use of for baking bread; there were also bakers by trade (Hos. 7:4; Jer. 37:21). Their ovens were not unlike those of modern times. But sometimes the bread was baked by being placed on the ground that had been heated by a fire, and by covering it with the embers (1 Kings 19:6). This was probably the mode in which Sarah prepared bread on the occasion referred to in Gen. 18:6.