Nam pla

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 Burmese, Cambodian, Filipino, Thai, Lao 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 and is prepared in many different ways in each country. It is eaten with 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.

Most fish sauces (extracts) are made from raw fish while some are made from dried fish. Some are made from only a single species, while others from whatever is dredged up in the net, including some shellfish. Most fish sauces are made from whole fish but there are a few made from only the blood or viscera. Most fish sauces contain only fish and salt, others add a variety of herbs and spices. Fish sauce that has been only briefly fermented has a pronounced fishy taste, while extended fermentation reduces this and gives the product a nuttier, richer and more savory flavor. An anonymous article, "Neuc-num", in Diderot and d'Alembert's 18th-century encyclopedia, states: "It is said that Europeans become accustomed enough to this type of sauce".

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Wikipedia