The Seder is eaten the first two nights of Passover outside of Israel, and the first night in Israel.
All of it can be eaten. Florets as a veg or in salad and the stem and leaves in a soup.
An afikomen is a matzoh eaten at a Passover seder.
Matzoh which is unleavened bread.
Yes, artichokes can be eaten during Passover. They are a kosher food and do not contain any leavened grains or legumes which are prohibited during the Passover holiday. However, it is always best to consult with a rabbi or observe personal customs and traditions when determining specific dietary guidelines for Passover.
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The sacrament of Reconciliation.
Chametz can be eaten in Jerusalem until the morning before Passover and cannot be eaten again until the end of the Passover season. The exact time until when chametz can be eaten is publicized locally in Jewish communities. Some religious Jews burn or destroy any chametz they have in preparation for Passover.
Perogie dough is made with raw flour and therefore is chametz. They cannot be eaten during Passover.
Gefilte fish is eaten on Sabbath and Festivals throughout the year. It has no specific relevance to Passover.
Observance of Passover, when the Temple in Jerusalem stood, required that every family slaughtered a lamb as an offering of thanks. The lamb then had to be roasted and eaten that night. Any of the lamb that wasn't eaten that night could not be eaten at a later time. Also, no different than today, unleavened bread (matzah) was a key part of the observance of Passover.
The Torah (Exodus ch.12) specifies matzoh, bitter hers and the meat of the pesach-sacrifice. Other foods are not mentioned, but wine, vegetables and fruits were probably on the menu.