Does this clay naturally dry out and harden? Or do you have to bake it so it keeps its form? If you bake them, do you find it looses its nutritional value as a food product?

Form the leafs (?right word?)

The plural of leaf is leaves. For this, however, we would probably say "greens". As in: "Shredded raw carrots and chopped carrot greens make great additions to salads".

Thanks for posting these too. I am becoming inspired to produce some of my own homemade parts.