Nori and sansho tsukudani

Tsukudani is a culinary preparation of seaweed or seafood, fish, shellfish, meat or vegetable that has been simmered for a long time in a sweet and salty sauce, usually with soy sauce, sugar and mirin.
It usually has an intense sweet and salty flavor, which helps preserve the ingredients.

Because of its strong flavor, tsukudani has been served with steamed rice since the Edo period (1600s-1800s) and is called Gohan no Okazu or rice side dish because it is eaten with steamed rice for flavor.

Tsukudani is always served and eaten fresh from the refrigerator and is not annealed before eating.