Treasures of the ocean make a sumptuous feast any time, and this menu is so special it could serve as an alternative Christmas menu. Scallop tostadas and crab cakes kick off, and a platter of rock lobster and steamed prawns come with a zingy choice of sauces. Step-by-step tips for cutting up lobster are included, along a suitably tropical finale: frozen passionfruit soufflés.