In a small bowl, whisk together butter, hot sauce and vinegar. Dip drumettes in butter mixture; arrange in single layer in large baking pan. Sprinkle with ranch seasoning. Bake until chicken is browned and an internal temperature of 165°F has been reached, about 30 to 40 minutes. Serve hot with celery and Hidden Valley Original Ranch dressing, for dipping.
For safe meat preparation, reference the USDA website.