Mexican Meatball and Chipotle Soup (Sopa de Albondigas y Chipotle)
1 egg 1 pound ground beef 1 pound ground pork 1 tablespoon finely chopped mint leaves 1 tablespoon olive oil 2 chipotle peppers in adobo sauce, or more to… 2 quarts chicken stock 3 cloves garlic 3 Roma tomatoes, seeded and finely chopped 4 potatoes, peeled and cubed 4 small zucchini, cubed 6 Roma (plum) tomatoes, quartered salt and ground black pepper to taste salt to taste ¼ cup uncooked basmati rice ¼ teaspoon dried oregano ½ onion ½ onion, finely chopped