unleaven
No. It's a personal preference.
bread
While the Jews were escaping Egypt, they had little time for the bread to rise, leaving them with Matzoh (Unleaven bread). On Passover, we are talking about what happened in Egypt and leaing Egypt, and we eat Matzoh instead of leaven bread, or anything that has grains, corn syrup, ect in it. All food that contains corn syrup, grains, (like wheat ect), ect are called 'Chomutz (sp?)' and are not allowed to be eaten on Passover. An exception to the grain rule is to Spanish Jews (Who eat rice commonly).
False Doctrine.Mat 16:12Then understood they how that he bade [them] not beware of the leaven of bread, but of the doctrine of the Pharisees and of the Sadducees.
Mark 8:15 - Then He charged them, saying, "Take heed, beware of the leaven of the Pharisees and the leaven of Herod." [NKJV]In the Bible, "leaven" is used both literally (the yeast that makes bread rise) and figuratively (a relatively small force or amount that nonetheless makes a major impact). As used by Jesus in Mark 8:15, "leaven" refers to a "corrupting influence."
it is called unleavened bread or otherwise known as quick bread. It is called unleavened because it does not contain any leavening agent such as yeast. Try to check this out on Jewish bread recipes.
There were several types of bread in Bethlehem as well as in the rest of Israel. The best bread was made from wheat, called flour or meal. A coarser bread was made of barley. Millet, spelt, beans, and lentils were also used in making bread. Leavened bread had leaven added to make the dough rise. Today we use yeast to make bread rise. When you wanted quick bread you would omit the leaven, and certain religious ceremonies called for unleavened bread. The Israelites learned baking bread and other desert breads and cakes from the Egyptians who were great bakers.
Then the dough wont rise during baking, so your making a hard biscut instead of bread.
The people had to leave Egypt so fast, they didn't have time to put leaven in their bread. Soon, every year, the people celebrated their escape from Egypt by celebrating Passover and so they ate unleavened bread.
See more date 4000 BC: the Egyptians discovered how to bake leavened bread using yeast.
In Jewish tradition, chametz (leaven) symbolizes pride and arrogance, which should be removed before Passover to signify a renewal of humility and spiritual freedom. It also serves as a reminder of the haste in which the Israelites left Egypt, as they did not have time to let their bread rise.
Yeast, a type of fungus, is a common non-flowering plant used in baking bread. Yeast helps to leaven the dough by producing carbon dioxide gas, which causes the bread to rise and have a fluffy texture.