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For this hamburger made of wood, leaves, and treebark, Illenberger worked with a woodcutter, who turned the bun on a lathe. The brief was to comment somehow on an environmental topic. "My idea was to bring up the issue of McDonalds deforesting South America," she says, though she is not, in fact, a vegetarian. "I would have preferred to use wood from South America, but it was too difficult, so I had to use German wood instead."