Pizhou Snack Training School and Chengdu Shuweiyuan Catering Training School. Pizhou is a county-level city in Xuzhou City, Jiangsu Province, with profound food culture. As one of Pizhou's special snacks, Snowflake Stinky Tofu needs to be made with brine. The production technology of brine can be studied in corresponding training schools, such as Pizhou Snack Training School and Chengdu Shuweiyuan Catering Training School. Brine is a common seasoning for China Cantonese cuisine and Fujian cuisine. It is a kind of soy sauce cooked with various spices. The raw materials are pepper, star anise, dried tangerine peel, cinnamon, licorice, tsaoko, galangal, ginger, onion, soy sauce, and crystal sugar.