Balandeliai: Lithuanian Stuffed Cabbage Recipe

Name: Balandeliai: Lithuanian Stuffed Cabbage Recipe
Cuisine: European, Eastern European
Ingredients: 1 head cabbage (about 4 pounds); 1 cup onion (finely chopped); 1 cup celery (finely chopped); 1/2 cup bell pepper (finely chopped); 2 tablespoons butter; 1 cup white rice (cooked); 1 1/2 pounds ground beef (or lamb or pork or a combination); 1 teaspoon garlic (finely chopped); 1 large egg (beaten); 1 pinch marjoram; Salt (to taste); Black pepper (to taste); 1 cup tomato puree; 1 cup stock (beef); 3 tablespoons sour cream