The product is environmentally friendly, but it might take a few weeks become truly "green". I'm talking about cheese sculptures. These time-sensitive art productions can change colour, and maybe even grow hair, depending on how long they are kept.
Having never attempted this activity myself, I can't compare cheese to porcelain or clay as an art medium; but one benefit of cheese is that it is more suitable for children, as it is more economical and can be safely consumed, by the non-lactose-intolerant. A cheese sculpture is also more conducive to being enjoyed in the comfort of one's kitchen, rather than in a rented pottery studio.
The images featured in the gallery are works by Sarah "The Cheese Lady" Kaufmann.