Abstract: Fish material, is immersed in a flavoring bath, and ultrasonic soundwaves are introduced into the flavoring bath to enhance the penetration of the flavoring bath into the fish material and also to tenderize the fish material. The treatment of the fish material may be performed in two different stages during each of which the intensity of the ultrasonic sound waves is different in the same bath or in succession in two flavoring baths each having a different composition. The treatment may be performed in a treatment vessel which contains the flavoring bath, or in a closed receptacle which is immersed in a body of liquid contained in an accommodating vessel.

Abstract: A process for acceleration of the ripening of spirits is described, wherein the spirits are irradiated with ultrasonic radiation in the presence of wood staves which serve as a source of bouquet-improving additives. Through control of the irradiation parameters, reproducible results may be achieved on the industrial level. Circulation of the spirits within the irradiation chamber increases the uniformity of the irradiation. An apparatus is described for a continuous performance of the process on an industrial level.