PURPOSE: To carry out the whole processes of processing of fish or vegetable in a narrow space by a small number of persons, by cutting fish, etc. on a treating bath e quipped with freezing pipes on the peripheral wall, feeding them into the treating bath, sending water from the bottom of the bath to wash term, dehydrating them, adding a seasoning solution to them, cooling them.

CONSTITUTION: Sliced fish or vegetables are cut into the desired size on the treating bath 1 equipped with the freezing pipes 4 on the peripheral wall, the cut fish or vegetables are fed to the treating bath 1, water is sent from the bottom of the bath, small and thin pieces, oily materials, etc. produced during the cutting are floated, separated, and the cut fish or vegetables are washed, dehydrated, salt water and another seasoning solution are fed to them, they are cooled to a given temperature and kept for a given time. Namely, the whole operation processes such as cutting of fish or vegetables, washing, dehydration, feeding of seasoning solution, cooling to a given temperature, keeping at the temperature can be carried out almost in one place, a wide operation space is not required, much labor and time needed in a conventional process can be reduced extremely, productivity is improved, transfer is not required, temperature control can be done easily, so that damage to sliced fish, etc. are extremely slight, and yield is increased.