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 products. Bull-Dog brand, created in 1935 and still made today by Bull-Dog Sauce Co., Ltd., Hatogaya, Japan, inventor of tonkatsu sauce. Tonkatsu sauce is derived from Worcestershire sauce, with additional vegetables and fruits, such as tomatoes, prunes, dates, apples, lemon juice, carrots, onions, and celery, to better suit the Japanese palate. 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.,