This tractor is all fondant. The tires are sugar cookies covered in fondant and royal icing for the treads. It is a replica of my father in laws farmall tractor. The cake is carrot cake and I used peanuts to look like potatoes (which he grows on the farm). Suprisingly, peanuts tasted really yummy with the carrot cake. The icing is BC colored to be brown because he hates chocolate (what is up with that??!!)