Tuna Steak With Tomato Lime Sauce ~This is a dish to exploit the meatiness and sweet flavour of tuna. Best made if you have a ribbed iron grilling pan - but you can still do it if you don't have one. In this straightforward recipe, all the flavours help each other along, the colours are nice and there are some zingy sweet-sour notes played by the vinegar, lime and sugar.