Spicy Black Beans with Chorizo and Chipotle Cream

Name: Spicy Black Beans with Chorizo and Chipotle Cream
Ingredients: 1 1/2 cups dried black beans (about 10 ounces); 2 peeled onions; 1 halved, 1 chopped (about 2 cups); 1 bay leaf; 1 teaspoon dried oregano (preferably Mexican); 2 tablespoons olive oil; 2 links fresh chorizo sausage (6 to 7 ounces), casings removed; 2 tablespoons finely chopped fresh cilantro plus additional for garnish; 2 garlic cloves, minced; 2 teaspoons minced seeded jalapeño chile; 1/2 teaspoon ground cumin; 1/2 cup sour cream; 1 1/4 teaspoons chipotle-flavored hot pepper sauce; 1 teaspoon fresh lime juice