by Low Lai Chow in New Food and Packaging on Tuesday 4 June 2013

Remember geography class, where you learnt about Earth’s interior and how it comprises four distinct concentric layers? When Melbourne-based baking enthusiast Rhiannon’s sister — who needed to teach this to a bunch of primary school kids in class — approached her with a brilliant idea to bake an actual cake of Earth that can be cut up to reveal its layered cross-section, she did just that. Just so you know, if Earth was a cake, the inner core is vanilla buttercake; the outer core, lemon Madeira sponge; the mantle, orange Madeira sponge; and the crust, chocolate buttercream and marshmallow fondant.