"Sushi grade" tuna is a term used to describe high-quality tuna that is safe to eat raw in sushi or sashimi preparations. It is also sometimes referred to as "sashimi grade" tuna. To be considered sushi grade, the tuna must meet specific standards in terms of freshness, handling, and freezing to ensure it is safe to consume raw. Finding sushi grade tuna can be a bit challenging, but we recommend checking specialty seafood markets.