A method for preparation of a hard food for consumption, the method including performance of steps of providing a vessel having an interior space partially filling the vessels interior space with water further filling the vessels interior space with the hard food absorbing a portion of the water into the hard food during a soaking time to form a water and food media providing an ultrasonic transducer and operatively associating the ultrasonic transducer with the vessels interior space providing an ultrasound generator and operatively connecting the ultrasound generator with the ultrasonic transducer and operating the ultrasound generator and the ultrasonic transducer to drive multiplicities of cavitating waves through the water and food media.
