Fish has a wide variety if its origin is fishing, but it can also be produced in a plant. It is normally a product with a high moisture content, but its fat content varies greatly among species. In general, it is a soft raw material and we only need an initial crusher in case of large species. Kontinuer has developed two systems. The Low Temperature System consists of protein coagulation, which separates the solid from the liquid. Whereas in the Batch System, cooking is performed by discontinuous loads.