Chicken with Piquant Green Sauce (Italy)

Makes 4 servings.

4 chicken breast, boned and skinned
2 celery stalks, chopped
2 carrots, chopped
2 small onions, quartered
12 peppercorns
4 cloves

2 garlic cloves
2 tablespoons chopped capers
1 cup chopped parsley
2 tablespoons wine vinegar
1 teaspoon Dijon mustard
12 tablespoons olive oil
salt and pepper to taste

Bring chicken, vegetables, peppercorns and cloves to a boil in enough water to cover. Cover and simmer 25-30 minutes or until chicken is tender. Remove chicken and chill 8 hours. To make sauce, combine remaining ingredients in small bowl, mix well. Slice chicken breasts thinly, arrange on platter and garnish with sauce.