Hangover cures are on the menu as Gregg Wallace meets London-based Australian chefs Ben O'Donoghue and Curtis Stone. They make upmarket mushrooms on toast, a restorative Bloody Mary, fish and shellfish pasta with focaccia bread and, to finish off the ultimate lazy trifle. Plus more from Jamie Oliver in The Naked Chef and a vintage helping of The Galloping Gourmet with Graham Kerr.