A frozen stuffed fish ball with low soup loss and the method of preparing the same. By combining hydrocolloid and oil pre-emulsification technology, the problems of taste of powder, soup loss of fish balls after freeze-thaw cooking and the taste of frozen stuffed fish balls after freeze-thaw cooking are solved. The use of konjac gum and carrageenan or curdlan respectively, combined with oil pre-emulsification technology, also effectively improves the texture and brightness of the outer skin of fish balls. Compared with a single addition of conventional technology, the hardness, elasticity and brightness are increased, solving loosen structure, brightness and other problems due to freeze-thaw cycle. Further, it may be used in the fish ball processing line for preparing fish ball with fillings and other stuffed surimi products.

An apparatus for preserving consumable products comprising an inner housing arranged within an outer insulated housing, wherein walls of the inner housing define a compartment for receiving consumable products, said walls comprising an inlet wall for inflow of a heat exchange fluid into the compartment, an opposed outlet wall for outflow of a heat exchange fluid out of the compartment, side walls and a base, the side walls and base adjoining the inlet wall to the outlet wall, wherein the inlet wall and outlet wall each include a series of apertures to accommodate a continuous heat exchange fluid flow through the apparatus such that, in operation, consumable products received in the compartment of the inner housing are immersed in the heat exchange fluid to exchange heat with the heat exchange fluid.