Nishime

Nimono is a simmered dish in Japanese cuisine. A nimono generally consists of a base ingredient simmered in shiru stock and seasoned with sake, soy sauce, and a small amount of sweetening. The nimono is simmered in the shiru over a period of time until the liquid is absorbed into the base ingredient or evaporated. The base ingredient for a nimono is typically a vegetable, fish, seafood, or tofu, or some combination of these. The shiru stock for a nimono is generally dashi. Other than sake and soy sauce, the stock can be further flavored with mirin, sugar, salt, vinegar, miso, or other condiments.

Source: Wikipedia