Ingredients Seafood 3 pounds halibut, sea bass, or other firm white fish, cut into inch-long cubes 1 large (2 lb or more) cooked Dungeness crab (hard shell) 1 pound (or more) of large shrimp 2 pounds little neck clams and/or mussels (mussels should be scrubbed clean and beards removed right before cooking) Sauce 1/2 cup olive oil 1 1/2 cups chopped onion (1 large onion) 1 cup chopped bell pepper..