Unagi-saus brukes tradisjonelt sett til grillet ål i Japan. Sausen er basert på soyasaus, er tykk og litt søtlig. Den passer godt til mange andre retter, også til maki sushi.

Unagi sauce is a type of thick and sweetened sauce, based on soy sauces. It is used in different Japanese dishes that contains BBQed eel. It can be used when grilling eel, on top of an eel roll or nigiri. In sushi, it's usually served with such dishes as Unagi (eel) roll, and dragon roll, and can be served with other rolls as well.