Cabbage White Bean Soup

Name: Cabbage & White Bean Soup
Ingredients: 1 tablespoon olive oil; 1 tablespoon butter; 1 onion, finely chopped; 2 carrots, peeled,and chopped small; 1 teaspoon caraway seed; 2 cups chopped green cabbage; 2 cups water; 1 tablespoon light brown sugar; 1 (15 1/2 ounce) can diced tomatoes, undrained; 1 (16 ounce) can white beans, rinsed and drained; 1 tablespoon cider vinegar; 1⁄4 cup chopped parsley (optional); 1 celery rib, diced