This is Japanese Chai Fish, also known as bonito and wooden fish. It is a smoked product of bonito belonging to CERATOPOGONIDAE. The bonito removes the head, tail and bones, only steam the muscles behind the abdomen, and then bake with firewood 10 for more than 0 days. After the water evaporated, it became a dark and hard fish.

Due to thermal expansion, it will shrink when it comes into contact with the surface of octopus balls with a thousand-mile fragrance.

Octopus meatballs, also known as octopus roast, originated in Osaka, Japan. The main ingredients are octopus, octopus baking powder, wooden fish slices, seaweed, salad dressing, octopus baking sauce and so on. The founder is a famous Japanese gourmet, Mr. Ryuji Endo. He is famous for his crispy skin and tender meat, delicious and cheap, and has become a famous national snack in Japan. Octopus meatballs are popular in Southeast Asia and become one of the emerging foods in various regions.