Bread is regarded as the most basic foodstuff. In the Talmud, a meal (requiring a blessing to be recited) is defined by the consumption of a piece of bread larger than an olive. There are several traditions that place bread and salt together
There are several mitzvot (commandments) unique to Passover, which are evident in the customs and rituals of the holiday to this day: matzah (the eating of unleavened bread); maror (the eating of bitter herbs); chameitz (abstaining from eating leavened bread or other foods containing wheat, barley, rye, oats, or spelt); biur chameitz (removal of leaven from the home); and Haggadah (participation in the seder meal and telling the story).