Chicken Salad with chestnuts

1/4 cup celery , thinly sliced 1/2 cup onion , finely chopped 3 tablespoons butter 3/4 cup mayonnaise 3/4 cup evaporated milk 1/4 cup white wine 1/4 cup[...]

4 boneless chicken breast halves , cooked and diced (you can boil it) 1/2 cup finely chopped celery 1 (8 ounce) can sliced and drained water chestnuts 1 cup[...]

1/4 cup low-fat mayonnaise 1/4 cup low-fat sour cream 1/2 cup plain yogurt 1 1/2 teaspoons all-purpose flour 1/2 cup nonfat milk 1 tablespoon lemon juice 2[...]