Worcestershire sauce 1800s were found dumped in a skip in 2009 by company accountant Brian Keogh. The documents are to be placed on display at the Worcester City Art Gallery & Museum. Anchovies in many Worcestershire sauces is a concern to people allergic to fish, vegans, other vegetarians and others who avoid eating fish. The "Codex Alimentarius" recommends that prepared food containing Worcestershire sauce with anchovies include a label warning of fish content although this is not required in most jurisdictions. The US Department of Agriculture has forced the recall of some products with undeclared Worcestershire sauce. Several brands sell anchovy-free varieties
Soy sauce books: "Shanjia Qinggong" (山家清供) and "Pujiang Wushi Zhongkuilu" (浦江吳氏中饋錄) during the Song dynasty (960–1279 AD). Like many salty condiments, soy sauce was originally a way to stretch salt, historically an expensive commodity. During the Zhou dynasty of ancient China, fermented fish with salt was used as a condiment in which soybeans were included during the fermentation process. By the time of the Han dynasty, this had been replaced with the recipe for soy paste and its by-product soy sauce, by using soybeans as the principal ingredient, with fermented fish-based sauces developing separately into fish sauce. The 19th century Sinologist Samuel