Fried dace with salted black beans is a canned food featuring fried mud carp flavored with fermented black soybeans, dau si. Fried dace with salted black beans originated in Guangzhou during the 1950s when many Chinese workers traveled from the Pearl River Delta to Southeast Asia for work. They would fry these inexpensive local fish, preserve it with salted black beans, and bring it with them to work as they were not used to eating foreign food. Fried dace is fragrant, rich, and very savory: a perfect side dish to go with white rice.