Don't miss out on our special Christmas issue with free 2023 calendar - subscribe by 11 October!
First make up the parsley salad by mixing all the ingredients together and stirring until completely combined. Set aside while you cook the tuna.
Heat a griddle or frying pan until practically smoking. Rub the tuna with the olive oil and season with salt and pepper. Griddle the tuna steaks for 1 min on each side, turning them 90 degrees after 30 secs if you want criss-cross patterns. This will give you tuna that is medium-rare, but if you like it well-cooked give it a few more mins on each side. It’s important not to move the fish around the pan before it’s seared as it will stick and break up. The steak will release itself from the pan once it’s ready to be turned.
Serve each steak with half the salad, a lemon wedge for squeezing over and a few new potatoes, if you like.