Borscht with Beef

Name: Borscht with Beef
Ingredients: 4 teaspoons canola oil, divided; 8 ounces sirloin or flank steak, trimmed, cut into 1/2-inch cubes; 8 ounces mushrooms, sliced; 4 medium beets (about 1 pound), peeled and shredded; 1 ½ cups shredded cabbage; 1 cup shredded carrots; 1 cup finely chopped onion; 1 cup finely chopped celery; ½ cup red wine; 6 cups reduced-sodium beef broth; 1 cup no-salt-added tomato sauce; 1 tablespoon Worcestershire sauce; ¼ cup chopped fresh dill, plus more for garnish; ½ cup reduced-fat sour cream