It's the biscuit based quarter final, and Paul and Mary are taking the challenges to another level. The signature bake sees the bakers  attempt to deliver a batch of perfectly baked crispbreads, and time and temperature work against them to produce six perfectly tempered chocolate tea cakes for the technical challenge.

After weeks of pastries, cakes and bread, three bakers have made it to the final. To prove themselves to judges Paul and Mary, they will have to make some first rate fondant fancies. But ultimately, it all comes down to their final ever showstopper - creating a masterpiece with a notoriously difficult Chiffon sponge.