Rib Roast With Mustard Sauce

Ingredients 1 (3-pound) boneless rib roast 1 cup vegetable oil 2/3 cup dry sherry 1 teaspoon dried whole thyme 1 teaspoon dried whole rosemary, crushed 1 teaspoon coarsely ground pepper 1/2 teaspoon onion salt 1/4 cup whipping cream, whipped 1/4 cup sour cream 2 tablespoons prepared mustard Dash of hot sauce Directions Trim fat from