Basting Sauce for Roast (For Company)

Recipes Ingredients:

12 lb Chuck Or Arm Roast
2 ts Salt
2 ts Dry Mustard
1 ts Pepper
1/2 ts Garlic salt
2 tb Mayonnaise
2 ts Onion Salt
2 tb Vinegar
2 ts Celery Salt
2 tb Kitchen Bouquet

Recipe Instructions:

Place unseasoned Roast in Roaster with 1 inch water. Cover and cook 3-4 hours depending on sixe of roast. Add Sauce and baste. Continue to cook covered til tender. Thicken liquid with flour.