The process was laborious, required the right equipment, and was an essential part of daily living. Grinding wheat into flour typically occurred in the early morning in order to produce enough yield for their daily bread. The ancient Israelites would use an elongated basalt stone called a saddle quern to put the grains on, and then take a smaller stone and run it back and forth like a saw to grind it into flour. Basalt is a specific type of stone that has high density and toughness, with a rough surface that could take hold of the wheat while it was being processed.