【Inpredients】Eel (Japan), soy sauce (contains wheat and soybeans), mirin, sugar, starch In Japan, it is said to be an ingredient that gives you energy. Because it is rich in vitamin A, vitamin B1, vitamin B2, and vitamin E. There are various cooking methods for eel. However, in Japan, it is mainstream to bake it with a sauce made with soy sauce or sugar. If you warm it up and put it on rice, it's a Japanese-style "eel bowl".