Is it safe to eat day old sushi or sashimi?

No, eating day old sushi or sashimi is not recommended and could pose health risks.

Raw fish used in sushi and sashimi can contain harmful bacteria such as Salmonella and E. coli. These bacteria can multiply at dangerous levels if the fish is not properly refrigerated or quickly prepared.

Even if the sushi or sashimi tasted and smelled normal when it was fresh, it is still risky to consume day old raw fish due to the potential growth of bacteria. Consuming spoiled fish can lead to foodborne illnesses with symptoms like nausea, vomiting, diarrhea, and stomach cramps.

To ensure safety, it's best to enjoy sushi and sashimi immediately after preparation or within a very short time if necessary. Leftover raw fish should not be consumed.