Cioppino

Name: Cioppino
Prep time: 45 min
Cook time: 1 h
Total time: 1 h 45 min
Cuisine: European, Italian, Mediterranean
Ingredients: ¼ cup + 2 tablespoons extra-virgin olive oil, divided; ⅔ cup finely chopped shallots, from about 3 shallots; 3 cloves garlic, minced; 1 cup white wine; 1 (28 oz) can crushed tomatoes; 2 (8 oz) bottles clam juice; 2 teaspoons sugar; 1¾ teaspoons salt, divided; ½ teaspoon crushed red pepper flakes; ½ teaspoon dried oregano; 7 sprigs fresh thyme, plus 1 teaspoon fresh chopped thyme; 1½ pounds firm-fleshed fish fillets, such as halibut, cod, salmon, snapper, etc., cut into 2-inch pieces; 3 tablespoons unsalted butter; 1½ pounds (about 18) littleneck clams, scrubbed (see note); 1½ pounds extra large raw shrimp, peeled and deveined; Fresh chopped Italian parsley, for garnish (optional)