Ingredient:

• 8 ounces uncooked elbow macaroni
• 1 pound peeled and deveined cooked shrimp (41-50 per pound)
• 1 cup chopped celery
• 1/2 cup chopped sweet red pepper
• 1/2 cup finely chopped onion
• 1 cup mayonnaise
• 3/4 cup plain yogurt
• 1 tablespoon white vinegar
• 1/2 teaspoon salt
• 1/4 teaspoon white pepper