The Passover Seder（逾越节家宴） is one of the most holy meals in the Jewish religion. Check out the pictures to see why certain foods are required and others are forbidden.
Seder Plate
Here is an example of a traditional plate used only on Passover. From the bone at the top and counter-clockwise we explain the traditional foods.
1. Z'roa: A lamb shank represents a symbolic offering to the temple.
2. Beitzah: The egg is a symbol of rebirth.
3 Maror: Bitter herbs（药草） such as horseradish（山葵） signify the bitterness of enslavement.
4 Karpas: A non-bitter vegetable, here parsley, is dipped in salted water to symbolize tears.
5. Haroset: A mixture of apple, nuts and wine that represents the mortar （灰泥）and bricks used by the enslaved Jews.
6. Hazeret: Another bitter herb, such as romaine lettuce. Some do not use a second bitter herb.
Notes：
逾越节:犹太人的新年,此节期纪念上帝在杀死埃及一切头胎生物的同时，并没有杀死犹太人的长子。
Wine
Four glasses of kosher red wine are required at the Passover Seder, each symbolizing one of the four promises made by God. Some people substitute（用...代替） grape juice for the wine.
No Grains That Ferment （发酵）
The five that are excluded are wheat, rye（黑麦）, oats（燕麦）, barley（大麦） and spelt（斯佩尔特小麦）. Any food that is made from these fermenting grains also cannot be included. Matzo, a flat wheat bread, is watched from grinding to finished product so that no fermentation takes place. These restricted foods are called hametz.
Matzo
As legend goes, the Jews did not have time to wait for the bread to leaven（发酵） when fleeing（逃离） Egypt hence they only consume Matzo which is a special unleavened bread. During passover it is eaten as a flat, cracker-like bread or used in dishes as breadcrumbs and in the traditional matzo-ball soup.