Gebrochts

[1] During the holiday of Passover, Jews are forbidden to eat any of five species of grain (wheat, barley, spelt, oats, and rye) if they have been "leavened."

Leavening (Hebrew: חמץ, romanized: chametz) is defined as flour of one of these grains combined with water and allowed to sit for more than 18 minutes before being baked.

Some hotels and restaurants open during Passover indicate on their menus, "if you would like to add matzo to your chicken soup, please notify the waiter so s/he may provide you with a disposable bowl and spoon."

[citation needed] In fact, the members of some nineteenth century Lithuanian Jewish communities deliberately ate gebrochts to demonstrate the permissibility of this practice.

[citation needed] Both the Vilna Gaon[4] and Rabbi Moshe Feinstein ruled that there is no reason to avoid eating gebrochts.