Phu quoc fish sauce waters around The island are rich in seaweed and plankton which provide food for the anchovy population. However, it only since the late 1950s that the product has been recognized outside of its home island, reaching its zenith of popularity between 1965 and 1975. With increasing government subsidies of many industries in the period from 1975 to 1985, the local fish sauce craft lost market share to larger competitors, but in recent years, the popularity of the authentic Phu Quoc product has been rebounding. In 2012, Phu Quoc fish sauce was granted a European Union Protected Designation of Origin (PDO)
Soy sauce the acid-hydrolyzed vegetable protein variety. In Indonesia, soy sauce is known as "kecap" (old spelling: "ketjap"), which is a catch-all term for fermented sauces, and cognate to the English word "ketchup". The most popular type of soy sauce in Indonesian cuisine is "kecap manis" or sweet soy sauce. The term "kecap" is also used to describe other non soy-based sauces, such as "kecap ikan" (fish sauce) and "kecap Inggris" (worcestershire sauce; lit. "English sauce", due to worchestershire sauce originating in England). Three common varieties of soy-based "kecap" exist in Indonesian cuisine, used either as ingredients or condiments: "Shōyu" is traditionally