Macaroni Salad

1 cup cooked elbow macaroni
1 1/2 tsp lemon juice -- OR
2 tbsp vinegar
1 tsp salad oil
1 tsp onion -- grated
1 cup celery -- diced w/leaves
1 cup parsley -- minced
3/4 cup yellow or orange bell pepper -- diced
3/4 tsp salt
black pepper
3 tbsp sour cream
2 tbsp buttermilk

Place macaroni in a large bowl. Sprinkle with lemon juice or vinegar and salad oil. Chill well for 2 hours. In a small bowl, combine sour cream, buttermilk, salt and pepper. Combine macaroni, all vegetables. Pour sour cream mixture over macaroni mixture. Mix well.