Salt Cod with Potatoes Onions and Black Olives

Name: Salt Cod with Potatoes Onions and Black Olives
Ingredients: 1-1/2 pounds dried salt cod (Bacalhau); 1/2 medium yellow onion, sliced; 2 bay leaves; 6 medium red or white rose potatoes; 1/3 cup plus 2 tablespoons fruity Spanish olive oil; 4 medium onions, cut crosswise into 1/8 inch slices and separated into rings; 6 cloves garlic, minced; 1 cup dry white wine; 2 cups fish stock or clam juice; 1 1/2 cups heavy cream; 24 oilcured black olives, pitted and coarsely chopped; 1/4 cup grated Gruyere cheese; 1/4 cup fresh bread crumbs; 1/2 teaspoon freshly ground black pepper; 2 tablespoons parsley, finely chopped