Like most religious traditions, removing Chametz before Passover is symbolic and relates to the same reason that Jews do not eat Chametz, or leavened food products, during passover. When the Jews split from Egypt, they were in a bit of a hurry. Without time to prepare, legend has it that they could only make the most basic of breads, without allowing the bread time to rise. Essentially, they at Matzo. In commemoration of their plight, and in celebration of their freedom, Jews eat matzo during Passover as a way of joining their ancestors both for the joy of freedom, the sadness at the losses of the Egyptians, and the pain at the conditions of the departure. Removing the leavened food products, most notably bread, is similar to the way that the fleeing Jews left behind many of the things they enjoyed, including such foods.
Some kosher companies make cereals that are Kosher for Passover.
Perogie dough is made with raw flour and therefore is chametz. They cannot be eaten during Passover.
Yes. Dog food is probably chametz on Passover and may not be owned by a Jew on Passover. Most dogs will happily eat Matzo and meat/chicken on Passover.
No, bulgar is chametz.
There are brands of kosher for Passover baking powder but they have to be marked specifically for Passover.
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.
Real granola, which contains oats and wheat, is chametz and cannot be eaten during Passover.
Bran is derived from grains and therefore chametz.
Baklava, which is made with phyllo dough, is chametz.
No, tortillas and other flat breads are chametz.
No. Wheat is chametz, unless it has been baked into matzah. For Passover, you should be using olive oil.
Chametz (Exodus ch.12) is leavening or leavened goods such as bread, cakes, and many other products. Torah-observant Jews do not eat them in Passover.