Help! i need ideas for an earth model for science?

Question

that is edible and represents thickness of each layer +/- 10 also matches composition if possible.

Answer 1

I think a peach would make a good model. The skin of the peach for the crust, the meat of the peach for the mantel, the hard seed in the middle for the outer core, and the inside of the big seed for the inner core.

I think that would work better than any other kind of food I can think of!

Answer 2

If you can get someone to help you cook try to make a pie or cake. Pie would probably be easier cause and even has crust.