Jews eat the Passover meal to commemorate what happen to them a long time ago. In The Bible, it explains that the Jews were taken out of Egypt, in a hurry. Their bread did not have a chance to leaven, and so they ate what they call "matzoh" Now Jews have a meal with "matzoh" in it, to commemorate it.
The Jews eat the Passover Seder meal on the night of Passover (Pesach). It makes little difference whether Passover begins on Shabbat or on a weekday. Note that there are festive meals on every Shabbat, but they are not called "seder" and the foods are different.
Jews.
Matza meal is matza that has been ground to the consistency of coarse bread crumbs. Matza meal is used in some cooking. On Passover especially, many people bake and cook with matza meal because it is not feasible to bake a cake in 18 minutes. Matza balls have a lot of matza meal in them, as you can imagine. Not all Jews will use matza meal on passover, however. Some Jews do not eat Gebrukts, matza with liquids on it. They are afraid that maybe there is still some flour that didn't get mixed with water and therefor has not been cooked and can still rise, which is forbidden on Passover. For that reason, some Orthodox Jews will not eat matza with spreads on it, and for the same reason will not eat anything baked with matza meal or any other matza by-product.
Jews do not eat pork, and they do not eat meat and dairy in the same meal. There are also guidelines for specific holidays, like no yeast on Passover and fasting on Yom Kippur.
The Haggadah contains the service for the seder.
Generally it occurs only during Passover, a Jewish holiday. There is also a seder for the holiday of Tu Bishvat, but this seder is rarely observed.
the jews eat onions
Passover is not a time of fasting, so Jewish people can eat during the middle of the day during Passover.
Passover is a Jewish holiday. God commanded that the Jews should have Passover to commemorate the Exodus from Egypt (Exodus ch.12). When the Jews were hurrying out of Egypt, where they were slaves, they didn't have time to let the dough of their bread rise. That is why the Jews eat Matzoh on Passover (a crusty unleavened bread). God further commanded the Jews to have a big meal, where they tell the story of the Ten Plagues and how God freed them from slavery, to get the ten commandments.
The Exodus from Egypt.
Most Jews call the Passover meal the Seder, a word which means "order," in reference to the order of service or liturgy of the meal. It is sometimes called the Feast of Freedom because it celebrates the liberation of Jews from slavery in Egypt. It is also sometimes called the Feast of Unleavened Bread because it features unleavened bread and one of the high points of the liturgy of the meal is the command to eat unleavened bread.
Lamb can be kosher for Passover. However, Ashkenazi Jews traditionally do not eat lamb during Passover.