Sushi is a traditional Japanese dish consisting of cooked vinegared rice combined with other ingredients such as seafood, vegetables, and sometimes tropical fruits. A sushi order typically includes a variety of items, including a ROLL, EEL, and ahi. A ROLL is a type of sushi made with seaweed and filled with various ingredients, while EEL is a type of fish commonly used in sushi dishes. Ahi is another type of fish, usually yellowfin tuna, and a tuna ROLL is a type of sushi ROLL filled with tuna.