Great British Bake Off

Given 7.2 million watched the Great British Bake Off final you would have thought that Chiffon cakes - one of the tasks in the final - would be instantly and widely available.  Congratulations to Konditor & Cook for their Lemon Chiffon.  For the uninitiated, a chiffon cake uses vegetable oil rather than butter and gets its lightness from the batter and foam method of preparation.