Tuna-Macaroni Shell Salad - cooking recipe

Ingredients

1 (6 1/2 oz.) can tuna (water packed)
1 c. cooked macaroni
2 Tbsp. onion (optional)
1/2 c. chopped celery or celery seed
3 Tbsp. diet mayonnaise
1 Tbsp. vinegar
pepper

Preparation

Mix well and chill.