Boil 1 pound wax beans and/or green beans(trimmed and halved) until tender, 4 minutes; drain. Cook 3 slices chopped bacon( in a skillet over medium heat until crisp, 7 minutes. Add 1 chopped shallot; (cook 2 minutes. Stir in 2 tablespoons cider vinegar. Toss in the beans, some chopped parsley, and salt and pepper.