We call them diggers, some people call them excavators, Richard Scarry called them power shovels. Whatever you call them, if you want to make a cake like the one below then you're at the right place. You will need: Flat serving platter - mine measured 33 cm x 33 cm (13 inch x 13 inch) 2 x 20cm square cakes Yellow Icing - I made a double quantity of Butter Icing from Edmonds cookbook, but had a lot left over White Icing - only need a little, I set aside about 1/4 cup of the butter icing…