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)
Tonkatsu sauce Tonkatsu sauce Tonkatsu sauce is a thick sauce commonly served over tonkatsu (breaded deep-fried pork cutlets). It is a high concentration version of Worcestershire sauce in Japan. It is determined by the JAS standard, over 2.0 Pa.s. The first Tonkatsu sauce was made in 1948 by Oliver Sauce Co., Ltd. of Hyogo Prefecture. While generally similar to a traditional brown sauce, it is vegetarian. The Bull-Dog brand of tonkatsu sauce, for example, is made from malt vinegar, yeast, and vegetable and fruit purees, pastes, and extracts. Currently, The most popular packaged condiment in eastern Japan is Bull-Dog sauce Co., Ltd