Curried Tofu Salad

2 tablespoons reduced-fat mayonnaise

2 tablespoons prepared mango chutney

2 teaspoons hot curry powder, preferably Madras

1/4 teaspoon salt

Freshly ground pepper, to taste

1 14-ounce package extra-firm water-packed tofu, drained, rinsed and finely crumbled (see Ingredient note)

2 stalks celery, diced

1 cup red grapes, sliced in half

1/2 cup sliced scallions

1/4 cup chopped walnuts