It's week four in the tent and the baking is getting serious. Having seen the bakers make cake, biscuits and bread, Mary and Paul up the ante - for the first time, we see how the bakers cope with multi-tasking across several baking skills at once. For their signature challenge the bakers must bake saucy puds - delicate sponges hiding a gooey saucy filling or a saucy surprise at the bottom. If baked for just a fraction too long the sauce won't ooze upon cutting, but they won't know if it has worked until they are judged. Sue explores the origins of the Paignton pudding - a pudding larger than a cow that caused a riot in Paignton in the 19th century. For the technical challenge, Mary sets the bakers her tiramisu cake. It's a new kind of tiramisu requiring the bakers to temper chocolate, bake beautifully thin coffee-soaked sponges and assemble to create perfect layers of sponge, cream and chocolate... but only if they read the recipe properly. For their final flourish the bakers are chall