Why don’t the Jews eat unleavened food ?

or Why does the LORD forbid them to eat unleavened food?

In Judaism, God forbids Jews from eating leavened breads during the holiday of Passover (the rest of the year they can eat leavened or unleavened bread). The reason for this prohibition is that when God brought the Jews out of Egypt, where they had been slaves, they had to hurry and couldn’t let the dough rise high enough to provide them with leavened bread. To commemorate this event, God commanded that Jews throughout the generations eat unleavened bread, just as their forefathers from Egypt had done.