An egg cup, sometimes called egg server, is a container used for serving boiled eggs within their shell. Egg cups have an upwardly concave portion to hold the egg and often include a base to raise the egg-retaining portion and give stability, informally known as footies. Egg cups can be made of porcelain, pottery, wood, plastic, glass and various metals or bakelite. Some are made of two materials (wood and ceramic). (source)