Sushi-grade tuna is about handling and freezing, not quality.

“Sushi-grade” isn’t a regulated term — it just means the fish has been handled and frozen to be safe to eat raw. Regular fresh tuna might be just as good-looking, but it’s not been through the same safety steps.

The real difference is in post-catch handling. Sushi-grade tuna is typically bled, gutted, and iced immediately to prevent bacteria growth and preserve texture. Then it’s flash-frozen at extremely low temperatures (often -20°C or colder for a specific duration) to kill any parasites. Regular fresh tuna might skip the bleeding step or never get frozen at all — it’s meant to be cooked, which kills parasites anyway.

That doesn’t mean sushi-grade is always better for cooking. If you’re searing or grilling, regular fresh tuna is often just as good and significantly cheaper. The "