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S.S. Rotterdam (1970)
On the menu: Green Turtle Consommé au Xeres

The green coloring of this classic green turtle soup, made with a sherry consommé, comes from the armor-like shell of the turtle, which, when cooked, becomes a greenish gelatinous substance. Green turtle soup was wildly popular for most of the 19th and 20th centuries, until turtles became endangered and diners recognized how cute they were.