Nigella's cooking competition comes to an end tonight, after nine weeks of challenges and tantrums, from the contestants I mean - although Nigella did have her moments. Just four cooks remain who will battle it out to become the ultimate... eh, taster? The ultimate tasting champion? I'm sure they will come up a catchy title for them. Their first challenge is all about champagne as they create canapes to accompany a glass of bubbly. Tonight's guest judge is French chef Pierre Koffmann, who is one of only a handful of chefs to be awarded three Michelin stars. No pressure then lads!