Sauerbraten with gingersnap

4 pounds beef roast sirloin tip, rump, round bone chuck, preferably boneless 1 1/2 cup vinegar 1 cup cola * 3/4 cups water 3 each onions sliced 2 each celery[...]

3 1/2 pounds beef round steak 2 cups wine vinegar heated 2 cups water 1 1/2 teaspoons salt 2 tablespoons parsley leaves 1 teaspoon black pepper 2 tablespoons[...]