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)
Fish sauce In January 2016, the Institute of Food Technologists published a study asserting that the "Vietnamese fish sauce added to chicken broth, tomato sauce and coconut curry reduced the amount of sodium chloride by 10-25 percent while still maintaining the perceived deliciousness, saltiness and overall flavor intensity." In China, fish sauce is called "yúlù" (, literally "fish dew") and is native to the provinces of Guangdong and Fujian. In Japan, fish sauce variations are used as a seasoning of local specialties. "Ishiru" in the Noto Peninsula is made from sardine and squid. "Shottsuru" of Akita Prefecture is mainly made from sailfin