Sushi grade means that the fish is safe to be consumed raw and is of the highest quality. The best way to make sure your tuna is sushi grade is to check the label and confirm with your fishmonger. To be classified as sushi grade, it has to have been frozen on the boat after being caught. Inspecting the tuna visually is always good practice. Look for a pale pink color with possibly a strip of darker meat running through the steaks.