Make and share this Cioppino recipe from Food. Crock Pot Italian Chicken. A San Francisco classic, this stew is traditionally made with the catch of the day. If you are in the mood for this seafood stew, and dont live near the ocean, just. Cover and simmer until the flavors blend, about 3. Add the clams and mussels to the cooking liquid. Cover and cook until the clams and mussels begin to open, about 5 minutes. Add the shrimp and fish. Simmer gently until the fish and shrimp are just cooked through, and the clams are completely open, stirring gently, about 5 minutes longer discard any clams and mussels that do not open. Season the soup, to taste, with more salt and red pepper flakes. Ladle the soup into bowls and serve.