The terms "Unaju" (written as 鰻重, うなじゅう, うな重) refer to a Japanese dish, which contains broiled eel on rice with sauce in Jubako (generally tiered square wooden boxes with a cover which is coated by urushi Japanese lacquer) or refers to a specific kind of container used to serve broiled eel.
鰻重（うなじゅう，うな重）とは、一般には木製の四角い箱に漆塗り等の塗りをかけた蓋の付いた食器である重箱の中に御飯を入れウナギの蒲焼を載せ、上から蒲焼のタレをかけた日本料理の一つ、又は鰻料理を入れる食器の名称。