Protein
Katsuobushi (smoke-dried skipjack tuna) shavings, known as bonito flakes contain about 76% protein, and one packet (2g) of bonito flakes contains 1.5g of protein. Even if you add one packet (2g) of bonito flakes to each meal, it is not high in calories or fat, so you can easily incorporate it into your regular meals. In 2g of bonito flakes, it contains only 7 kcal of calories and 0.1g of fat.
Essential amino acids
Amino acids are the building blocks of proteins, and there are 2 categories of the amino acids necessary for the body, one is "non-essential amino acids" that can be synthesized in the body, and another is nine types of "essential amino acids" that cannot be synthesized in the body and must be obtained from food. Katsuobushi contains all nine essential amino acids (isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, valine, and histidine).
Iron
One packet (2g) of bonito flakes contain 0.2 mg of Iron. There are two types of iron: "heme iron," found in animal foods such as bonito flakes, is more easily absorbed by the body than "non-heme iron," found in plant foods.
DHA & EPA
One packet (2g) of bonito flakes contains 10mg of DHA and 2mg of EPA.
DHA (docosahexaenoic acid) and EPA (eicosapentaenoic acid) have various functions, such as preventing arteriosclerosis and blood clots and lowering blood pressure, and are said to be effective in preventing and improving lifestyle-related diseases.