The first signature challenge in 2014 was a Swiss roll, and they’ve cropped up now and again across Bake Off. This Swiss roll must include an inlay design (made by piping and freezing colored batter before spreading the sponge mix on top) and at least two fillings. Iain’s Swiss roll is based on Queen’s University in Belfast, his alma mater, with an absurdly complicated inlay design. Originally from Hong Kong, she is making a lemon and matcha Swiss roll. Jasmine’s using lemon, as is Leighton, who explains that his Swiss roll is inspired by the Amalfi Coast.