Thai influenced tuna steak with a light and aromatic salad. Ideal for summer. Make sure the tuna you get is a dark ruby red and not brown or gray. (Brown shows age/oxidization, gray shows ice damage.) Tuna should be served seared and red in the middle as it is much more tender and juicy. If you do not like it this way increase the cooking time in the pan or transfer tuna to a baking tray and oven cook it at gas mark 7 for around 4 minutes.