Ingredient:

• 1 package (16 ounces) elbow macaroni
• 1 cup mayonnaise
• 2 tablespoons cider vinegar
• 1 tablespoon sugar
• 2 teaspoons yellow mustard
• 1-1/2 teaspoons salt
• 1/4 teaspoon pepper
• 1 medium sweet red pepper, chopped
• 1/2 cup finely chopped red onion
• 1 celery rib, finely chopped
• 2 hard-boiled large eggs, chopped