Swordfish in Creamy Tomato Sauce

Name: Swordfish in Creamy Tomato Sauce
Ingredients: 2 tablespoons unsalted butter; 4 garlic cloves, crushed; 1 poblano or Anaheim pepper, cut into 1/4-inch dice; Kosher s alt; Freshly ground black pepper; 1 (16-ounce) can whole tomatoes, drained and finely chopped; 1/2 cup water; 2 tablespoons heavy cream; 4 (6-ounce) swordfish steaks, about 1-inch thick; 1 teaspoon red wine vinegar; Pinch of dried oregano; 1 3/4 cup warm water, divided; 1 1/4 teaspoons active dry yeast, divided; 1 cup all-purpose flour; 1/2 teaspoon sugar; 2 tablespoons extra-virgin olive oil; 3 cups bread flour; 1/2 cup whole wheat flour; 1 tablespoon plus 1 teaspoon salt; Cornmeal, for dusting; Nigella or sesame seeds, for sprinkling