It is about Passover and its traditional foods.

Passover and its Symbolic Foods
. The key to Passover is organization. Not only must special food be bought and stored, but the entire house, including garage and cars must be rid of chametz, any leavened food.
On the very first day, you shall remove leaven from your houses, for whoever eats leavened bread from the first day to the seventh day, that person shall be cut off from Israel" (Exodus 12:15).
Chametz: So what exactly is chametz?
Chametz is a mixture of flour and water that is allowed to rise. In addition to bread, it refers to any kind of food that has leavening properties or…