Onigiri was originally invented for the needs of the army, as a quick and satisfying snack during a campaign. The traditional Japanese recipe included salmon, but today there are variations with a wide variety of flavors. Mirin is as traditional in Japanese cuisine as soy sauce. It gives the dish a pleasant sweetish taste. Mirin is low in calories and contains B vitamins and microelements. In addition, it increases appetite and strengthens the walls of blood vessels.