2. Use the Steamer & Griller: Place the green crabs in the Steamer & Griller, set the temperature to 95°C and steam for 20 minutes. Green crab, an animal. Carapace is oval, body flat, hairless, cephalothorax is developed, both chelae are strong, hind feet, shaped like hokkaido, so it is called according to hokkaido. Cephalothoracic armor is about 1.5 times as wide as it is long, and the dorsal surface is elevated and smooth. Surface of cephalothorax with obvious "H"-shaped indentation; forehead with 4 prominent triangular teeth, size and spacing of teeth roughly equal. Anterolateral margin with 9 prominent triangular teeth of similar size.