Horse mackerel (Trachurus japonicus) is one of the most important fishery resources in the world. Its productivity is ranked as the third in all the single capture species of the world, with annual landings that exceeded 5–10 million tons in the past 10 years. Horse mackerel is well known for its high fat content, especially unsaturated fatty acid. However, due to high content of protein and dark muscle, it is susceptible to deterioration during processing and storage. Therefore, a large amount of horse mackerel is wasted because of inappropriate processing technique