A heating/stirring cooker includes a stirring body. The stirring body is detachably attached to the interior of a container, and stirs the food. The stirring body includes a blade, a permanent magnet, a magnetic metal plate, a storage, and a clutch. The blade stirs the food. When the stirring body is attached to the container, the permanent magnet is located opposite the inner bottom surface of the container and receives a rotating magnetic field. The magnetic metal plate is provided on the permanent magnet and inhibits magnetic flux leakage. The storage has a perimeter on which the blade is formed, and movably stores the permanent magnet. The clutch transmits the rotational force of the rotating magnetic field to the storage, only when a claw is in engagement with a notch. The stirring body generates high rotational force when attached and suppresses the impact of the magnetic field when detached.