In these pictures, you will see several ulu knives, a fillet knife, a steel and a wrapped half salmon. An ulu is an Eskimo knife that is the perfect tool for the job. These knives, made by Chase Hensel, are Yup'ik-style, from Western Alaska, where salmon is the staple food (an ulu also does a bang up job cutting frozen meats and fish but these instructions are for a fresh or fully thawed salmon). These ulu blades are made from segments of a thick old cross cut saw blade, which is especially good for this purpose. The handles are ivory and wood. Choose the size of your ulu in proportion to the size of your fish. While we prefer to use an ulu, people also use fillet knives. In either case, you will need a sharp and rust-free blade. Use the steel frequently to keep your edge uniform.