"The idea behind this cake is that you would make the cake mixture, jelly and chocolate cream at home, take it with you to a barbecue, and bake the cake in a covered barbecue," says Devlin. "You could bake it in the oven at home straightaway, but it's at its best completely fresh, and you get to look awesome by baking a cake while everyone is watching and anticipating it."
Note Agar agar is available from health-food and Asian food stores. Devlin recommends Valrhona Blanc Ivoire white chocolate, available at gourmetgroceronline.com.au. Otherwise use Lindt white chocolate.