During the Middle Ages, elaborate master salt cellars evolved. Placed at the head table, this large receptacle was a sign of status and prosperity, prominently displayed. It was usually made of silver and often decorated in motifs of the sea. In addition to the master salt, smaller, simpler salt cellars were distributed for diners to share; these could take forms as simple as slices of stale bread. The social status of guests could be measured by their positions relative to the master's large salt cellar: high-ranking guests sat "above the salt" while those of lesser importance sat "below the salt".