An apparatus for disintegration (or mixing) of a solid in a vessel containing liquid, has a control unit and an ultrasound transducer for generating ultrasonic energy under control of the control unit. A coupling medium in communication with the ultrasound transducer is adapted to receive the vessel. Ultrasonic energy is transferred to the contents of the vessel such that in use the ultrasonic energy causes disintegration of the solid into the liquid contained in the vessel. An agitating mechanism is adapted to agitate the disintegrated solid in the liquid contained in the vessel. The agitating mechanism may include a paddle having a coating of flavouring material. A method for disintegration of a solid in a vessel is also disclosed.
