Tsukudani is a traditional Japanese dish made by simmering small seafood, such as sardines or shrimp, in a mixture of soy sauce, sugar, and mirin. This cooking method enhances the natural flavors of the ingredients while preserving them, making it a popular choice for a side dish or condiment. Often served with rice, Tsukudani can also include vegetables like seaweed or mushrooms. It is known for its savory and slightly sweet taste, and is commonly enjoyed in Japanese households as a way to savor seasonal ingredients.