Amount	Ingredient
As needed	additional vegetable oil
2	Celery ribs, quartered lengthwise
1 Cup	cold water
As needed	fresh parsley sprigs
1/8 Teaspoon	freshly ground black pepper
1/4 Cup	ground mustard
1 Teaspoon	kosher salt
2 Tablespoons	olive oil
1 Medium	onion, peeled and quartered
2 Slices	TURKEY BACON
2 Cups	TURKEY BROTH OR reduced-sodium chicken broth
1/4 Cup	unsalted butter, softened
1/2 Teaspoon	white vinegar
1 (10 to 12 Pound)	WHOLE TURKEY
2 Tablespoons	Worcestershire sauce