Tray Luncheon is popular for this sort of semi-official entertaining, since it is easily served and its informality creates just the atmosphere needed. A tray luncheon can be decorative as well as delicious. Matching Italian papier-mache trays, rattan trays, or brightly lacquered Japanese trays, or a set made in the school carpentery shop add interest to the party. So do novelty stainless steel knives and forks with colored plastic or wooden handles in place of your best silver.
But the doors are the doors of shut-ins, of lonely old people, sick men and women, hospital wards, veterans’ hospitals, and similar institutions.
At the Seder various foods are present which symbolize the hardships the Israelites suffered during their bondage in Egypt and praise given for their deliverance. Matzah (matzoth), unleavened bread, is eaten in memory of the fact that the Jews, escaping from Egypt, had no time to leaven their bread. Bitter herbs (maror) symbolize the embittered existence of the Israelites during their enslavement in Egypt. The shank bone of a lamb is on the table, a reminder of the paschal lamb. Roasted or hard-cooked eggs are served, symbols of the free-will offering that accompanied the sacrifice of the lamb.