Stir Fried Dancing Crab With Fresno Chile Rings

Name: Stir-Fried Dancing Crab With Fresno Chile Rings
Ingredients: 2 large fresh Dungeness crabs; 1 tablespoon coarsely chopped Chinese fermented black beans (do not rinse them); 3 tablespoons Chinese rice wine or dry sherry; 1 1/2 tablespoons finely minced fresh ginger; 2 tablespoons finely minced garlic; 1/4 cup thinly sliced green onions; 3/4 cup unsalted chicken stock or low-sodium broth; 1 tablespoon low-sodium soy sauce; 1/2 teaspoon sugar; 2 tablespoons corn or peanut oil; 2 ounces coarsely ground pork butt; 1/2 teaspoon paper-thin rings of red Fresno chile; 1 1/2 teaspoons cornstarch dissolved in 1 tablespoon cold water; Slivered green onions, for garnish