4 cups cubed (1/2 inch) cooked chicken (about 1 3/4 pound) |
1 cup walnuts,toasted and chopped |
1 celery rib, cut into 1/4-inch-thick slices (1 cup) |
2 tablespoons finely chopped shallot |
2 cups halved seedless red grapes |
3/4 cup mayonnaise |
3 tablespoons tarragon vinegar |
2 tablespoons finely chopped fresh tarragon |
1/2 teaspoon salt |
1/2 teaspoon black pepper |
