The question of what is sushi grade fish comes up a lot and no one seems to accurately answer that question. After some research I am now able to provide information as to the guidelines and regulations that are followed in the seafood industry in terms of serving raw seafood. As for micro standards for sushi or sashimi
grade seafood, I have spoken with many in the seafood industry who supply ‘sushi grade’ fish for sushi and sashimi served at restaurants and they all give me the same answer… they do not know of any regulations from either the FDA or any other agencies regarding 'sushi grade' seafood, which is why suppliers set up their own micro and chemical parameters for their products. A personal search of FDA documents turns up the same results, no clear standards as to what makes fish 'sushi grade' or 'sashimi grade' and no definition of the term. The only concern any inspectors have is referred to as the parasite destruction guarantee, which is accomplished by 'freezing and storing seafood at -4°F (-20°C) or below for 7 days (total time), or freezing at -31°F (-35°C) or below until solid and storing at -31°F (-35°C) or below for 15 hours, or freezing at -31°F (-35°C) or below until solid and storing at -4°F (-20°C) or below for 24 hours' which is sufficient to kill parasites. The FDA's Food Code recommends these freezing conditions to retailers who provide fish intended for raw consumption (for further information, please visit the FDA website). I know that is a mouthful, but it's the facts. Other than a few specific organisms of concern for some seafood, sashimi standards are set as any other ready-to-eat item.
