The feast looks so lifelike that more than a few gawkers over the years have tried to partake. Spread across the central table is a generous dinner for 8, complete with an immense ham made of petrified wood. In the bowl of fruit at the center sit prunes made of Apache tears, a round pebble form of obsidian, along with blueberries made from azurite. Hearty bowls of hominy consist of pearl slugs, iridescent wonders produced by mollusks in the dark mud of the Mississippi River. The pepper in the pepper…