Considered a delicacy in several parts of the world, sea urchin, or uni in Japanese, is prized for its unique flavor. But the cost of the gonads — the orange tongues found inside an urchin ...

frozen pebbles and dried-urchin “sand” that showcases the Norwegian green’s murky orange innards. Sloan provides the urchins, which the Danish have dubbed søpindsvin (sea hedgehogs).