I do wonder if they didn't do "millionaire shortbread" as the technical because it's such an obvious choice of technical. If the bakers hadn't been told millionaire shortbread was a signature/showstopper, I think they'd all have practised making them just in case. Also - not sure about Yan, but I do appreciate the constant geekery. I realised she was quoting Galaxy Quest verbatim at one point this week: "never give up, never surrender"