Rachel will be showing us the recipe for the Walnut cake that she served at her wedding. It's got a vanilla buttercream filling and is covered in an indulgent American frosting that's great for a special occasion. Rachel meets Isidora Popovic who has turned a college art project into an award-winning baking business. And the cookery school students are making cookies. This quick and versatile recipe always produces perfect results, whether you like your cookies bursting with cranberries or covered in chocolate.