One week down. Having survived cakes, the remaining eleven bakers are tested on biscuits. Serving up signature savoury biscuits, the bakers must push themselves on flavour to create biscuits that go well with a cheese course, and Sue learns the dirty secret behind the invention of the ice cream cone and the start of the UK ice cream industry. In the technical challenge Mary sets the bakers her recipe for florentines. With their chewy caramel sauce and lacy brandy snap texture covered in tempered chocolate, the bakers must follow Mary's basic instructions, adding up to a more exacting bake than expected. And finally a showstopper like no other - in the most ambitious biscuit challenge to date, the bakers are challenged to create three-dimensional biscuit scenes. They can make any scene they like as long as it is made entirely from biscuits and doesn't fall over... easier said than done in the Bake Off tent. The bakers are really put under scrutiny as the biscuits must taste as good as they look, as the judges make their decision about who will leave the Bake Off tent.