What is "fish sauce"

n. A condiment made from fermented fish.

Fish sauce is an amber-colored liquid extracted from the fermentation of fish with sea salt. It is used as a condiment in various cuisines. Fish sauce is a staple ingredient in numerous cultures in Southeast Asia and the coastal regions of East Asia, and features heavily in Cambodian, Filipino, Thai, Laotian and Vietnamese cuisines. It also was a major ingredient in ancient European cuisine, but is no longer commonly used in those regions.

In addition to being added to dishes during the cooking process, fish sauce is also used as a base for a dipping condiment, prepared in many different ways in each country, for fish, shrimp, pork, and chicken. In parts of southern China, it is used as an ingredient for soups and casseroles. Fish sauce, and its derivatives, impart an umami flavor to food due to their glutamate content.