alphitomancy

Etymology
From, from and.

Noun

 * 1) An Ancient Greek method of divination using barley meal, used for instance to reveal guilty parties; it entailed feeding a person or group barley meal, and judging those who felt no effects to be innocent, while judging those who felt indigestion to be guilty.
 * 2) * 1931, Lock translating de Givry Picture Museum of Sorcery:
 * Aleuromancy and alphitomancy were almost analogous processes; cakes were made of wheat or barley flour which could not be swallowed by anyone guilty of a given misdeed.

Translations

 * Italian: alfitomanzia