1 lb. box ziti, cooked & drained
2 (6 1/2 oz.) cans tuna, white, packed in water, drained
2 lg. stacks celery, chopped
1 onion, chopped
3/4 c. light mayonnaise
1/2 c. light sour cream or nonfat plain yogurt
2 tbsp. Dijon mustard
Dried dill weed
Pepper
Carrot curls

Mix together in large bowl chilled ziti, celery, onion and tuna. In small bowl mix together mayonnaise, sour cream and mustard. Pour over ziti and mix to coat. Add dill weed and pepper to taste. Garnish with carrot curls. Cover and chill overnight.

Serves 8-10.