Some familiar faces from Bake Offs past compete once more. Lea from series one, James from series three, Norman from series five, Peter from series 11, Kevin from series 13 and Nicky from series 14 begin their quest with a Signature featuring an old-fashioned dish that some might say is an acquired taste. The Technical tests the bakers on the Scottish staple of shortbread. Then in the Showstopper, the bakers showcase their national pride with a celebratory cranachan creation.