The cooks prepare some spiced sweet dishes for guest chef Yotam Ottolenghi, then serve up the spiciest spoonfuls they can muster to Nigella, Anthony and Ludo - with some eye-watering results.

The cooks keep it in the family, making recipes passed down through the generations. The guest chef Ruth Rogers sets the immunity challenge.

The show goes to chocolate heaven, as the cooks are challenged to produce sensational sweet and savoury spoonfuls containing chocolate, ranging from chocolate cupcakes to chocolate and Stilton tarts.